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 A260612 #37 Jun 07 2021 14:22:53
%S A260612 1,1,1,1,0,-1,1,2,-1,-2,1,-4,-13,4,12,1,20,-109,-308,108,288,1,-100,
%T A260612 -2509,12772,37068,-12672,-34560,1,620,-74509,-1793708,9232908,
%U A260612 26676288,-9158400,-24883200,1,-4420,-3199309,373731652,9049521228,-46507180032,-134457649920,46133452800,125411328000
%N A260612 Triangle read by rows: T(n,k) = coefficient of x^(n-k) in Product_{m=0..n-1} (x+(-1)^m*m!), 0 <= k <= n.
%H A260612 Jon E. Schoenfield, <a href="/A260612/b260612.txt">Table of n, a(n) for n = 0..1034</a> (first 120 terms from Matthew Campbell)
%F A260612 T(n, 1) = A058006(n-1) = (-1)^(n+1)*A153229(n) for n >= 1.
%e A260612 Row 0: 1.
%e A260612 Row 1: (x+(-1)^(0)*0!) = x+1. Coefficients are 1 and 1.
%e A260612 Row 2: (x+(-1)^0*0!)*(x+(-1)^(1)*1!) = (x+1)*(x-1) = x^2-1. Coefficients are 1, 0, and -1.
%e A260612 Row 3: (x+(-1)^(0)*0!)*(x-(-1)^(1)*1!)*(x+(-1)^(2)*2!) = (x+1)*(x-1)*(x+2) = x^3 + 2*x^2 - x - 2. Coefficients are 1, 2, -1, and -2.
%Y A260612 Cf. A058006, A153229.
%K A260612 sign,tabl
%O A260612 0,8
%A A260612 _Matthew Campbell_, Aug 08 2015