Review: A070512, A070513

David Wilson davidwwilson at attbi.com
Tue Jun 4 19:31:37 CEST 2002


Fixed up the names and some inaccurate elements in these sequences.

The "hard" keyword seems inappropriate.  As it was, I easily wrote up a
search program that
extended the sequences to full length in a few seconds.  I could easily
outline a slightly more
complicated program that would fairly spew out elements of these sequences.

Since digital length is involved, base is important, and I added the "base"
keyword.

Anyway:

%N A070152 a such that b exists with SUM(j = a to b; j) = concatenation of a
and b.
%S A070152
1,2,4,7,13,18,33,35,78,133,178,228,273,388,710,1333,1701,1778,2737,3087,
%S A070152
3273,3478,3563,5338,7063,9063,12488,12643,13333,14208,15238,17147,17778,
%S A070152
22448,23788,27313,29058,31463,34488,36763,36993,38788,43273,50813,53578
%K A070152 nonn,base

%N A070153 b such that a exists with SUM(j = a to b; j) = concatenation of a
and b.
%S A070153
5,7,29,53,63,88,91,119,403,533,623,2148,2353,2813,3835,5333,6076,6223,
%T A070153
7889,8728,9163,25039,26603,51513,53333,55168,62223,85338,93633,103463,
%U A070153
119063,134938,159518,175238,185979,213073,219413,235313,242818,264888
%K A070153 nonn,base








More information about the SeqFan mailing list