This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A161150 #7 Mar 11 2014 01:32:31 %S A161150 2,1,12,1,10,3,56,1,18,5,44,3,26,7,240,1,34,9,76,5,42,11,184,3,50,13, %T A161150 108,7,58,15,992,1,66,17,140,9,74,19,312,5,82,21,172,11,90,23,752,3, %U A161150 98,25,204,13,106,27,440,7,114,29,236,15,122,31,4032,1,130,33,268,17,138 %N A161150 a(n) = (largest odd divisor of n)*(largest power of 2 dividing (n+1)). %F A161150 a(n)*A161151(n) = n*(n+1) = A002378(n). %F A161150 a(n) = A000265(n)*A006519(n+1). %Y A161150 Cf. A161151, A000265, A006519, A002378. %K A161150 nonn %O A161150 1,1 %A A161150 _Leroy Quet_, Jun 03 2009 %E A161150 Extended by _Ray Chandler_, Jun 11 2009