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 A133630 #6 Nov 04 2015 22:27:52 %S A133630 4,33,57,68,85,87,111,121,141,143,164,169,185,187,209,219,221,235,247, %T A133630 249,253,260,289,292,299,303,319,323,327,335,341,356,361,377,381,388, %U A133630 391,403,407,411,435,437,451,452,473,481,484,485,489,493,516,517,519 %N A133630 Nonprime numbers k such that binomial(k+p,k) mod k = 1, where p=10. %H A133630 Charles R Greathouse IV, <a href="/A133630/b133630.txt">Table of n, a(n) for n = 1..10000</a> %o A133630 (PARI) is(n)=binomial(n+10,10)%n==1 && !isprime(n) \\ _Charles R Greathouse IV_, Nov 04 2015 %Y A133630 Cf. A000040, A133620-A133625, A133630, A038509, A133634-A133636, A133880, A133890, A133900, A133910. %K A133630 nonn,easy %O A133630 1,1 %A A133630 _Hieronymus Fischer_, Sep 30 2007