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 A177945 #11 Oct 14 2024 01:35:07
%S A177945 3,7,13,37,79,163,349,757,1567,3163,6547,13099,26497,52999,106273,
%T A177945 212557,426889,855427,1710853,3421903,6845869,13691767,27385087,
%U A177945 54771007,109542907,219096259,438203677,876417229,1752875893,3505814527,7011656629,14023322167,28046754727,56093637367
%N A177945 Record values in A177942.
%C A177945 From the construction of A177941, this is a subsequence of A023200.
%o A177945 (PARI) listar(nn) = {my(va = vector(nn), rec = 0); va[1] = 5; for (n=2, nn, p = factor(va[n-1]^2-4)[1,1]; if (p > rec, print1(p, ", "); rec = p); va[n] = va[n-1] + p - 1;);} \\ _Michel Marcus_, Dec 14 2018
%Y A177945 Cf. A177941, A177942, A177943, A023200, A177929, A177930, A177931, A177932.
%K A177945 nonn
%O A177945 1,1
%A A177945 _Vladimir Shevelev_, May 15 2010
%E A177945 Sequence extended by _R. J. Mathar_, Jun 30 2010
%E A177945 More terms from _Michel Marcus_, Dec 14 2018