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 A170956 #8 Jan 05 2021 02:39:25
%S A170956 1,0,0,1,0,0,0,1,0,0,1,1,0,0,1,0,0,0,1,0,0,1
%N A170956 Expansion of Product_{i=1..m} (1 + x^(4*i-1)) for m = 3.
%C A170956 Product_{i=1..m} (1 + x^(4*i-1)) is the Poincaré polynomial for both Sp(2m) and O(2m+1).
%D A170956 H. Weyl, The Classical Groups, Princeton, 1946, see p. 238.
%Y A170956 Cf. A000700, A147599, A169975, A170956-A170965.
%K A170956 nonn,fini,full
%O A170956 0,1
%A A170956 _N. J. A. Sloane_, Aug 29 2010