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 A188524 #22 Apr 14 2021 01:17:01 %S A188524 2,2,4,4,6,10,16,31,55,100,185,345,644,1209,2274,4298,8145,15469, %T A188524 29454,56213,107489,205925,395190,759621,1462282,2818799,5440705, %U A188524 10513994,20340794,39393580,76368240,148185145,287791544,559386196,1088144064,2118283567,4126561528,8044217224 %N A188524 In base-2 lunar arithmetic, out of all odd numbers of length n, it appears that 111..1 (with n ones) has the most lunar divisors; the sequence gives the number of lunar divisors of the runner-up. %H A188524 D. Applegate, M. LeBrun and N. J. A. Sloane, <a href="http://arxiv.org/abs/1107.1130">Dismal Arithmetic</a> [Note: we have now changed the name from "dismal arithmetic" to "lunar arithmetic" - the old name was too depressing] %H A188524 <a href="/index/Di#dismal">Index entries for sequences related to dismal (or lunar) arithmetic</a> %e A188524 For n = 3, 4, 5 the runner-ups are 101, 1101 or 1011, 11011; thereafter they appear to be the numbers 111...101 or their reversals (see A188288). %Y A188524 Cf. A079500, A188288. %K A188524 nonn,base %O A188524 3,1 %A A188524 _N. J. A. Sloane_, Apr 16 2011