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 A050339 #8 Feb 21 2025 15:42:23 %S A050339 1,1,4,4,10,16,30,54,22,75,74,176,102,206,267,535,399,518,950,526, %T A050339 1585,154,1094,1446,1344,3091,2252,4527,817,4158,4879,3357,9809,8811, %U A050339 12664,3605,14653,3005,15738,8429,10479,29762,4777,16863,31883,34631 %N A050339 Number of factorizations with 2 levels of parentheses indexed by prime signatures. A050338(A025487). %Y A050339 Cf. A025487, A050338. %K A050339 nonn %O A050339 1,3 %A A050339 _Christian G. Bower_, Oct 15 1999