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 A126914 #10 Feb 11 2020 12:34:53
%S A126914 1,9,37,40,60,69,85,114,147,156,174,183,255,289,312,324,336,349,361,
%T A126914 373,418,451,493,499,511,520,534,549,649,657,673,676,715,741,787,855,
%U A126914 862,874,883,888,897,952,960,1021,1087,1092,1104,1126,1141,1147,1171,1209
%N A126914 Numbers n such that 1 + k^2 + k^4 + k^6 + k^8 + k^10 + k^12 + k^14 + k^16 + k^18 + k^19 is prime.
%H A126914 Daniel Starodubtsev, <a href="/A126914/b126914.txt">Table of n, a(n) for n = 1..10000</a>
%t A126914 a = {}; Do[If[PrimeQ[1 + n^2 + n^4 + n^6 + n^8 + n^10 + n^12 + n^14 + n^16 + n^18 + n^19], AppendTo[a, n]], {n, 1, 1400}]; a
%o A126914 (PARI) is(n)=isprime(1+n^2+n^4+n^6+n^8+n^10+n^12+n^14+n^16+n^18+n^19) \\ _Charles R Greathouse IV_, Jun 13 2017
%Y A126914 Cf. A049407, A124175 A124176 A124177, A124178, A124179, A124180, A124181, A126908-A126916.
%K A126914 nonn,easy
%O A126914 1,2
%A A126914 _Artur Jasinski_, Dec 31 2006