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 A050350 #6 Dec 19 2015 13:24:17 %S A050350 1,1,1,5,5,15,11,45,35,25,65,130,145,60,240,351,520,141,810,775,926, %T A050350 315,1037,1721,321,2532,3302,2392,1640,3951,5310,742,7500,12498,6043, %U A050350 6915,13795,4970,15624,1688,16198,21435,10352,16733,43404,15035,25967 %N A050350 Number of factorizations into distinct factors with 3 levels of parentheses indexed by prime signatures. A050349(A025487). %K A050350 nonn %O A050350 1,4 %A A050350 _Christian G. Bower_, Oct 15 1999