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 A125259 #19 Jul 14 2025 13:08:48 %S A125259 0,2,8,16,22,26,28,34,44,62,68,76,82,92,104,110,118,128,134,166,184, %T A125259 202,212,266,286,296,314,328,350,356,376,406,428,436,460,470,506,520, %U A125259 532,562,580,638,650,652,680,692,722,734,740,778,812,820,824,862,896,908 %N A125259 Numbers k such that k^4 + 3 is prime. %H A125259 Carmine Suriano, <a href="/A125259/b125259.txt">Table of n, a(n) for n = 1..5860</a> %t A125259 Select[Range[0,1000],PrimeQ[#^4+3]&] (* _Harvey P. Dale_, Aug 02 2023 *) %o A125259 (PARI) isok(n, k=4) = isprime(n^k + k - 1); \\ _Michel Marcus_, Oct 11 2013 %Y A125259 Other sequences of the type "Numbers k such that k^j + j - 1 is prime": A000040 (j=1), A005574 (j=2), A067200 (j=3), this sequence (j=4), A125260 (j=5), A125261 (j=6), A125262 (j=7), A125263 (j=8), A125264 (j=10), A125265 (j=11)... %K A125259 nonn %O A125259 1,2 %A A125259 _Zak Seidov_, Nov 26 2006