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 A090099 #6 Oct 15 2013 22:32:20 %S A090099 1,8,7,30,3,22,38,54,42,14 %N A090099 Smallest bases the smallest true-prime-power-pseudoprime is belonging to equals a true power of n-th prime. %e A090099 n=10: p[10]=29, a[10]=14 because -1+14^(841-1)=840.k, %e A090099 and in A020142 the terms<841 are not powers of primes. %e A090099 Corresponding least p-power pseudoprimes are 4,9,25,49,121,..,841,.. %Y A090099 Cf. A020142, A090096-A090098, A007535. %K A090099 nonn %O A090099 1,2 %A A090099 _Labos Elemer_, Dec 01 2003