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 A136243 #13 Dec 19 2022 03:31:44 %S A136243 3,4,6,12,14,20,32,42,54,60,84,90,102,104,132,150,164,182,192,194,200, %T A136243 234,242,264,282,332,350,374,402,420,432,434,450,462,464,500,542,570, %U A136243 572,660,674,684,692,710,740,744,762,770,810,864,882,942,1014,1040 %N A136243 Numbers k in A008864 such that k^2 - k - 1 is prime. %C A136243 See A053185 for the primes associated with a(n). %F A136243 a(n) = A053184(n) + 1. %o A136243 (PARI) isok(k) = isprime(k-1) && isprime(k^2-k-1); \\ _Michel Marcus_, Dec 19 2022 %Y A136243 Cf. A008864, A053184, A136242. %K A136243 nonn %O A136243 1,1 %A A136243 _Lekraj Beedassy_, Dec 24 2007 %E A136243 a(20)=194 inserted by _Georg Fischer_, Dec 18 2022