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 A088572 #12 Nov 13 2024 15:16:20 %S A088572 1,2,3,4,6,7,9,10,13,14,16,17,18,21,23,24,27,30,31,34,35,37,38,44,46, %T A088572 51,53,58,59,60,63,65,67,69,72,77,80,84,86,88,91,95,102,105,108,111, %U A088572 115,116,118,119,123,126,128,129,132,133,136,139,142,146,149,150,151,154,156,157 %N A088572 Numbers n such that (2n+1)^2 - 2 is prime. %H A088572 Alois P. Heinz, <a href="/A088572/b088572.txt">Table of n, a(n) for n = 1..10000</a> %p A088572 q:= n-> isprime((2*n+1)^2-2): %p A088572 select(q, [$0..157])[]; # _Alois P. Heinz_, Nov 13 2024 %o A088572 (PARI) is(n)=isprime((2*n+1)^2-2) \\ _Charles R Greathouse IV_, Jun 12 2017 %Y A088572 Cf. A028870, A073577. %K A088572 nonn %O A088572 1,2 %A A088572 Herman H. Rosenfeld (herm3(AT)pacbell.net), Nov 17 2003