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 A160026 #7 Sep 08 2022 08:45:44 %S A160026 13,29,37,59,89,101,107,241,263,293,373,409,569,683,821,971,1033,1187, %T A160026 1229,1277,1289,1423,1511,1627,1759,1823,1901,1907,1973,2011,2069, %U A160026 2083,2099,2207,2311,2473,2593,2633,2707,2719,2753,2819,3023,3137,3209,3221 %N A160026 Primes p such that p^4 + 17^4 + 3^4 is prime. %C A160026 For primes p, q, r the sum p^4 + q^4 + r^4 can be prime only if at least one of p, q, r equals 3. This sequence is the special case q = 17, r = 3. %C A160026 It is conjectured that the sequence is infinite. %C A160026 There are consecutive primes (1901, 1907) in the sequence. %e A160026 p = 3: 3^4 + 17^4 + 3^4 = 83683 = 67*1249, so 3 is not in the sequence. %e A160026 p = 1901: 1901^4 + 17^4 + 3^4 = 13059557751203 is prime, so 1901 is in the sequence. %e A160026 p = 1907: 1907^4 + 17^4 + 3^4 = 13225216032803 is prime, so 1907 is in the sequence. %o A160026 (Magma) [ p: p in PrimesUpTo(3250) | IsPrime(p^4+83602) ]; // _Klaus Brockhaus_, May 03 2009 %Y A160026 Cf. A158979, A159829, A160022. %K A160026 easy,nonn %O A160026 1,1 %A A160026 Ulrich Krug (leuchtfeuer37(AT)gmx.de), Apr 30 2009 %E A160026 Edited, 409 inserted and extended beyond 2069 by _Klaus Brockhaus_, May 03 2009