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 A154351 #4 Apr 15 2015 09:46:05 %S A154351 2,1,1,2,2,1,1,2,2,1,1,1,3,2,2,1,1,1 %N A154351 a(n) = number of distinct values of A056239(m) when A153452(m) is equal to n. %Y A154351 Cf. A060437. %K A154351 easy,nonn %O A154351 2,1 %A A154351 _Naohiro Nomoto_, Jan 07 2009