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 A170957 #8 Jan 05 2021 02:39:32
%S A170957 1,0,0,1,0,0,0,1,0,0,1,1,0,0,1,1,0,0,2,0,0,1,1,0,0,1,1,0,0,1,0,0,0,1,
%T A170957 0,0,1
%N A170957 Expansion of Product_{i=1..m} (1 + x^(4*i-1)) for m = 4.
%C A170957 Product_{i=1..m} (1 + x^(4*i-1)) is the Poincaré polynomial for both Sp(2m) and O(2m+1).
%D A170957 H. Weyl, The Classical Groups, Princeton, 1946, see p. 238.
%Y A170957 Cf. A000700, A147599, A169975, A170956-A170965.
%K A170957 nonn,fini,full
%O A170957 0,19
%A A170957 _N. J. A. Sloane_, Aug 29 2010