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 A170967 #7 Jan 03 2021 21:14:46
%S A170967 1,1,0,0,0,1,1,0,0,1,1,0,0,1,2,1,0,0,1,1,0,0,1,1,0,0,0,1,1
%N A170967 Expansion of Product_{i=0..m-1} (1 + x^(4*i+1)) for m = 4.
%t A170967 CoefficientList[Series[Product[1+x^(4i+1),{i,0,3}],{x,0,30}],x] (* _Harvey P. Dale_, Jul 11 2019 *)
%Y A170967 Cf. A169975, A170966-A170984.
%K A170967 nonn,fini,full
%O A170967 0,15
%A A170967 _N. J. A. Sloane_, Aug 29 2010