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 A225874 #8 Sep 08 2022 08:46:05
%S A225874 31,61,151,281,661,911,1531,1901,9461,18911,25561,27011,31601,51511,
%T A225874 57781,59951,81281,86461,94531,97301,111751,114761,140281,183361,
%U A225874 187211,286801,347161,363151,401861,485161,603781,697511,720101,758551,806011,939611,965801
%N A225874 Primes of the form 5*p^2+5*p+1, where p is a prime.
%C A225874 Primes generated in A175063.
%C A225874 The square roots of (4*a(n)+1)/5 are in A072055. [_Bruno Berselli_, May 19 2013]
%t A225874 Select[Table[p=Prime[n]; 5*p^2+5*p+1, {n,85}], PrimeQ]
%o A225874 (Magma) [a: p in PrimesUpTo(500) | IsPrime(a) where a is 5*p^2+5*p+1]; // _Bruno Berselli_, May 19 2013
%Y A225874 Cf. A175063.
%K A225874 nonn
%O A225874 1,1
%A A225874 _Jayanta Basu_, May 19 2013