some "unknown" sequences

[N. J. A. Sloane]

Can anyone solve these puzzles?


%I A113904
%S A113904 1,7,1,8,9,5
%N A113904 Sent in with no explanation. - njas
%K A113904 nonn,unkn,uned,obsc,new
%O A113904 1,2
%A A113904 cynthia (cynthia_tsang87(AT)yahoo.com), Jan 29 2006


%I A106648
%S A106648 8,17,32,53
%N A106648 Submitted with no explanation. - njas
%K A106648 nonn,unkn,uned,more,new
%O A106648 0,1
%A A106648 MICK JOYCE (mjpj69(AT)msn.com), Jan 22 2006


%I A113785
%S A113785 2,3,13,175
%N A113785 Found in Harpers' magazine article on Chinese civil service exam.
%C A113785 It would be nice to know the definition of this sequence! - njas
%Y A113785 Adjacent sequences: A113782 A113783 A113784 this_sequence A113786 A113787 A113788
%K A113785 nonn,unkn,more,uned,obsc,new
%O A113785 0,1
%A A113785 bob mckaige (bobmckz(AT)yaahoo.com), Jan 20 2006



%I A112273
%S A112273 5,15,365,945
%N A112273 A puzzle sequence, answer unknown.
%D A112273 Floor van Lamoen, Posting to Seq Fan mailing list, Nov 28 2005
%Y A112273 Adjacent sequences: A112270 A112271 A112272 this_sequence A112274 A112275 A112276
%K A112273 nonn,unkn
%O A112273 1,1
%A A112273 njas, Nov 24 2005



%I A112027
%S A112027 7,8,4,6,25,26,13,15
%N A112027 A puzzle sequence, answer unknown.
%D A112027 Joshua Zucker, Posting to Seq Fan mailing list, Nov 24 2005
%Y A112027 Adjacent sequences: A112024 A112025 A112026 this_sequence A112028 A112029 A112030
%K A112027 nonn,unkn
%O A112027 1,1
%A A112027 njas, Nov 24 2005


%I A112026
%S A112026 30,28,32,38,40,42,46,52,60,60,64,68
%N A112026 A puzzle sequence, answer unknown.
%D A112026 Joshua Zucker, Posting to Seq Fan mailing list, Nov 24 2005
%Y A112026 Adjacent sequences: A112023 A112024 A112025 this_sequence A112027 A112028 A112029
%K A112026 nonn,unkn
%O A112026 1,1
%A A112026 njas, Nov 24 2005


%I A112023
%S A112023 1000,72,5,25,7
%N A112023 A puzzle sequence, answer unknown.
%D A112023 Joshua Zucker, Posting to Seq Fan mailing list, Nov 24 2005
%Y A112023 Adjacent sequences: A112020 A112021 A112022 this_sequence A112024 A112025 A112026
%K A112023 nonn,unkn
%O A112023 1,1
%A A112023 njas, Nov 24 2005

and from an email that just arrived:

From: "areynolds" <areynolds at blueyonder.co.uk>
To: <njas at research.att.com>
Subject: number sequence
Date: Wed, 1 Feb 2006 19:13:29 -0000

could you please help me solve these number sequences ?

874,_,_,_,542  (3 spaces)

145,_,238,_,421 (2 spaces)

587,_,503,_,_,419 (3 spaces)




Neil