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 A265395 #16 Dec 13 2015 07:53:56
%S A265395 0,6,15,33,91,435,703,1891,2701,12403,18721,38503,49141,79003,88831,
%T A265395 104653,146611,188191,218791,226801,269011,286903,385003,497503,
%U A265395 597871,665281,721801,736291,765703,873181,954271,1056331,1314631,1373653,1537381,1755001,1869211,1987021,2035153,2284453,2741311,3059101,3270403,3363121,3913003
%N A265395 Record values in A265388.
%C A265395 Question: Are all terms apart from 0 and 435 (= 3*5*29) semiprimes? See also comments in A265394 & A265396.
%H A265395 Antti Karttunen, <a href="/A265395/b265395.txt">Table of n, a(n) for n = 1..192</a>
%F A265395 a(n) = A265388(A265394(n)).
%o A265395 (PARI) lista(nn) = {r = 0; for (n=1, nn, nr = gcd(vector(n-1, k, binomial(2*n, 2*k))); if (nr > r, print1(nr, ", "); r = nr););} \\ _Michel Marcus_, Dec 08 2015. Note: this gives correct value for a(1) only from PARI version 2.8 onward, see A265388 for why. - _Antti Karttunen_, Dec 11 2015
%Y A265395 Cf. A265388, A265394, A265396.
%K A265395 nonn
%O A265395 1,2
%A A265395 _Antti Karttunen_, Dec 08 2015