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 A115104 #24 Feb 17 2017 14:55:32 %S A115104 1,3,4,7,9,10,19,25,34,37,39,42,49,54,55,72,73,78,85,87,93,94,102,108, %T A115104 109,118,138,142,147,157,160,165,168,175,192,195,202,210,214,220,228, %U A115104 232,243,247,249,250,252,253,258,267,273,274,279,289,297 %N A115104 Numbers n such that 4*n^3 + 1 is prime. %C A115104 For any n in this sequence, 3*(4*n^3 + 1) has the same nonzero digits as its prime factors in base 2n. - _Ely Golden_, Dec 12 2016 %H A115104 Ely Golden, <a href="/A115104/b115104.txt">Table of n, a(n) for n = 1..1000</a> %e A115104 If n=94 then (4*n^3 + 1) = 3322337 (prime). %t A115104 Select[Range[300], PrimeQ[4*#^3 + 1] &] (* _Stefan Steinerberger_, Mar 04 2006 *) %o A115104 (PARI) is(n)=isprime(4*n^3+1) \\ _Charles R Greathouse IV_, Feb 17 2017 %Y A115104 Cf. A001912. See A199307 for the actual primes. %Y A115104 See also A199364, A199365, A199366, A199367, A199368, A199369. %K A115104 nonn %O A115104 1,2 %A A115104 _Parthasarathy Nambi_, Mar 02 2006 %E A115104 More terms from _Stefan Steinerberger_, Mar 04 2006