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 A145523 #24 Mar 20 2024 16:02:49 %S A145523 1,2,11,11,15,66,66,96,96,96,96,96,3693,15005,18978,18978,18978,43002, %T A145523 55943,972190,1151214,2799146,15519397,15519397,15519397,122101417, %U A145523 210553237,289585489,473093534 %N A145523 Least integer k > 0 such that A000041(k) is divisible by 2^n. %C A145523 The requirement a(n) > 0 is somewhat arbitrary, chosen for agreement with A046641; a(n) >= 0 would have been possible, too, yielding a(0)=0. %C A145523 a(29) > 10^9. %F A145523 a(n) = A046641(2^n). %o A145523 (sh) i=1; c=1; while [ $c -le 21 ]; do echo -n `./A046641 $i`", "; c=`expr $c + 1`; i=`expr $i + $i`; done # _M. F. Hasler_, Oct 18 2008 %Y A145523 Cf. A000041, A046641, A000123, A046063. %K A145523 more,nonn %O A145523 0,2 %A A145523 _M. F. Hasler_, Oct 12 2008 %E A145523 More terms from _M. F. Hasler_, Oct 18 2008 %E A145523 a(22)-a(28) from _Max Alekseyev_, Dec 16 2011