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 A075145 #5 Feb 23 2013 06:38:16 %S A075145 2,3,5,6,8,8,9,9,11,11,11,11,12,12,14,13,14,13,14,14,13,14,15,15,14, %T A075145 15,15,16,14,15,15,16,16,17,16,16,16,15,18,17,18,16,17,16,17,17,17,17, %U A075145 18,17,18,18,17,18,17,19,19,17,19,18,20,18,18,19,18,19,19,18,20,19,19,21 %N A075145 Prime basis of A061373. %C A075145 Since A061373 is pseudo-logarithmic with A061373(m*n)=A061373(m)+A061373(n) for m,n>1, its prime basis is sufficient to define it. %F A075145 a(n)=A061373(A000040(n)), where p(n)=A000040(n) lists the primes. If p(n)-1 is written as product p(i)^e_i, then a(n) = 1 + sum a(i)*e_i. %K A075145 nonn %O A075145 1,1 %A A075145 _Henry Bottomley_, Sep 04 2002