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 A152280 #4 Jul 20 2015 03:52:54 %S A152280 0,2,28,321,3339,34851,355857,3604013,36401367,366916898,3692575693, %T A152280 37117851883,372788385400,3741537104740 %N A152280 Number of 8's among the digits of all n-digit primes. %Y A152280 Cf. A130817, A152272, A152273, A152274, A152275, A152276, A152277, A152278, A152279, A152281. %K A152280 base,nonn %O A152280 1,2 %A A152280 _Jon E. Schoenfield_, Dec 01 2008 %E A152280 a(12)-a(14) from _Giovanni Resta_, Jul 20 2015