Review: A070512, A070513 (erratum)
David Wilson
davidwwilson at attbi.com
Tue Jun 4 21:15:26 CEST 2002
I should have read description of A070512 more closely. The sequence
was accurate as stated, and just needed extending. I have given slightly
shorter descriptions.
%N A070512 Take pairs (a,b) with SUM(j = a to b; j) = concatenation of a and
b. Sort pairs on b then a. This sequence gives a of each pair.
%S A070512
1,2,4,13,18,33,35,7,78,133,178,228,273,388,710,1333,1701,1778,2737,3273,
%T A070512
3563,3087,3478,12488,13333,14208,17778,31463,36993,5338,7063,9063,12643,
%U A070512
15238,17147,22448,23788,27313,29058,34488,36763,38788,43273,50813,53578
%K A070512 nonn,base
%N A070513 Take pairs (a,b) with SUM(j = a to b; j) = concatenation of a and
b. Sort pairs on b then a. This sequence gives b of each pair.
%S A070513
5,7,29,53,63,88,91,119,403,533,623,2148,2353,2813,3835,5333,6076,6223,
%T A070513
7889,8728,9163,25039,26603,51513,53333,55168,62223,85338,93633,103463,
%U A070513
119063,134938,159518,175238,185979,213073,219413,235313,242818,264888
%K A070513 nonn,base
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