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 A064697 #10 May 15 2024 19:42:19 %S A064697 2,17,19,23,29,47,59,61,97,1019,1021,1033,1051,1063,1087,1091,1153, %T A064697 1193,1223,1229,1291,1297,1301,1429,1433,1487,1531,1553,1567,1607, %U A064697 1621,1663,1697,1709,1741,1777,1783,1811,1823,1847,1861,1873,1979,2017,2029,2063 %N A064697 Numbers k such that A064696(k) = k-1. %F A064697 It appears that all terms are primes. %K A064697 nonn %O A064697 1,1 %A A064697 Jonathan Ayres (jonathan.ayres(AT)btinternet.com), Oct 10 2001 %E A064697 More terms from _Sean A. Irvine_, Jul 23 2023 %E A064697 Missing 1223 inserted by _Sean A. Irvine_, May 15 2024