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 A316676 #9 Sep 23 2018 22:51:02
%S A316676 49,70,77,91,100,110,112,119,121,130,133,143,154,160,161,169,170,175,
%T A316676 176,187,190,196,203,208,209,217,220,221,230,238,242,245,247,250,253,
%U A316676 256,259,272,275,280,286,287,289,290,299,301,304,308,310,319,322,323,325,329,340,341,343,350,352,361,364
%N A316676 Ordered set of products (P_s(k) + 1)*(P_s'(k') + 1), s,s' >= 3, k,k' in {3,4} with nontrivial polygonal numbers P_s(k).
%C A316676 Conjecture: All odd numbers d >= 17 excluding d in {P_s(k), s >= 3, k >= 5; P_s(k) - 1, s >= 3, k >= 4; a(n)} are accurate the primes p = d >= 17.
%t A316676 pn[s_, k_] := s (k - 1) k/2 - (k - 1)^2 + 1;
%t A316676 lst = {}; Do[n = (pn[s, k] + 1) (pn[ss, ks] + 1);
%t A316676 lst = Union[lst, {n}], {s, 3, 20}, {ss, 3, 20}, {k, 3, 4}, {ks, 3,
%t A316676 4}]; Take[lst, 70]
%Y A316676 Cf. A090466 (nontrivial polygonal numbers).
%K A316676 nonn
%O A316676 1,1
%A A316676 _Ralf Steiner_, Jul 10 2018