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 A176410 #5 Apr 27 2019 05:24:58
%S A176410 1,1,1,1,9,1,1,1,1,1,1,-191,2113,-191,1,1,1,1,1,1,1,1,7681,-337919,
%T A176410 7681,-337919,7681,1,1,1,1,1,1,1,1,1,1,-430079,47738881,-430079,
%U A176410 180203521,-430079,47738881,-430079,1,1,1,1,1,1,1,1,1,1,1
%N A176410 A symmetrical triangle of adjusted polynomial coefficients based on Hermite orthogonal polynomials.
%C A176410 Row sums are: {1, 2, 11, 4, 1733, 6, -652793, 8, 273960969, 10, -143712092149, ...}.
%H A176410 G. C. Greubel, <a href="/A176410/b176410.txt">Rows n = 0..50 of triangle, flattened</a>
%e A176410 Triangle begins as:
%e A176410 1;
%e A176410 1, 1;
%e A176410 1, 9, 1;
%e A176410 1, 1, 1, 1;
%e A176410 1, -191, 2113, -191, 1;
%e A176410 1, 1, 1, 1, 1, 1;
%e A176410 1, 7681, -337919, 7681, -337919, 7681, 1;
%e A176410 1, 1, 1, 1, 1, 1, 1, 1;
%t A176410 T[n_, m_]:= CoefficientList[HermiteH[n, x], x][[m + 1]]Reverse[ CoefficientList[ HermiteH[n, x], x]][[m + 1]] - (CoefficientList[ HermiteH[n, x], x][[1]]Reverse[CoefficientList[HermiteH[n, x], x]][[1]]) + 1;
%t A176410 Table[T[n, m], {n, 0, 10}, {m, 0, n}]//Flatten
%Y A176410 Cf. A060821.
%K A176410 less,sign,tabl
%O A176410 0,5
%A A176410 _Roger L. Bagula_, Apr 16 2010
%E A176410 Edited by _G. C. Greubel_, Apr 26 2019