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 A358234 #9 Nov 29 2022 12:52:38 %S A358234 1,2,2,1,1,2,2,2,3,1,1,4,2,3,3,1,1,4,2,2,4,1,1,4,2,3,4,2,1,5,2,3,3,1, %T A358234 2,6,2,3,4,1,1,4,2,2,5,1,1,6,3,3,3,2,1,5,2,4,4,1,1,7,2,3,6,1,2,5,2,2, %U A358234 3,2,1,6,2,3,4,2,2,3,2,3,4,1,1,6,2,3,2,1,1,8,3,2,4,1,2,5,2,4,5,1,1,5,2,3,6 %N A358234 Number of ways 2n can be expressed as an unordered product of two natural numbers that do not generate any carries when added together in the primorial base. %H A358234 Antti Karttunen, <a href="/A358234/b358234.txt">Table of n, a(n) for n = 1..16384</a> %H A358234 <a href="/index/Pri#primorialbase">Index entries for sequences related to primorial base</a> %F A358234 a(n) = A358233(2*n). %o A358234 (PARI) A358234(n) = A358233(n+n); %Y A358234 Bisection of A358233. %K A358234 nonn,base %O A358234 1,2 %A A358234 _Antti Karttunen_, Nov 26 2022