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 A075762 #6 Mar 30 2012 18:39:09 %S A075762 1,9,129,47169,1049913,615504609,15797864577,11270258161281, %T A075762 246696657053411097,7087786816380876801,178199489594187990894537, %U A075762 158945391097530669380671857,4791412124651983778003371329 %N A075762 A001003(p-1)/p where p runs through the odd primes. %F A075762 a(n)=A001003(prime(n+1)-1)/prime(n+1) %K A075762 easy,nonn %O A075762 1,2 %A A075762 _Benoit Cloitre_, Oct 09 2002