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 A283272 #39 Mar 17 2017 12:32:04 %S A283272 1,1,-1,1,-1,-1,1,-1,-2,0,1,-1,-4,-1,0,1,-1,-8,-5,0,1,1,-1,-16,-19,-1, %T A283272 4,0,1,-1,-32,-65,-9,21,4,1,1,-1,-64,-211,-55,127,49,7,0,1,-1,-128, %U A283272 -665,-285,807,500,81,3,0,1,-1,-256,-2059,-1351,5179,4809,1038,45 %N A283272 Square array A(n,k), n>=0, k>=0, read by antidiagonals, where column k is expansion of Product_{j>=1} (1-x^j)^(j^k) in power of x. %H A283272 Seiichi Manyama, <a href="/A283272/b283272.txt">Antidiagonals n = 0..139, flattened</a> %F A283272 G.f. of column k: Product_{j>=1} (1-x^j)^(j^k). %e A283272 Square array begins: %e A283272 1, 1, 1, 1, 1, 1, ... %e A283272 -1, -1, -1, -1, -1, -1, ... %e A283272 -1, -2, -4, -8, -16, -32, ... %e A283272 0, -1, -5, -19, -65, -211, ... %e A283272 0, 0, -1, -9, -55, -285, ... %e A283272 1, 4, 21, 127, 807, 5179, ... %Y A283272 Columns k=0-9 give A010815, A073592, A283263, A283264, A283271, A283336, A283337, A283338, A283339, A283340. %Y A283272 Row k=5 gives A281581. %Y A283272 Main diagonal gives A283333. %Y A283272 Cf. A144048. %K A283272 sign,tabl %O A283272 0,9 %A A283272 _Seiichi Manyama_, Mar 04 2017