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v[1] = 1; for(n = 2, N, my(i = n); v[i] = (1 + (8*n - 14)*x)*v[i - 1] + (2*x - 4*x^2)*deriv(v[i - 1], x)); v};\nrow(n, p) = {my(c = Vecrev(p)); c};\nT(N) = {my(v = P(N)); concat(vector(#v, i, row(i, v[i])))};\nT(10)","reading":{"first_row":1,"offset":1,"reversed":false,"trim_zeros":"none","regular_triangle":false}},{"oeis_id":"A290315","target":"triangle","first_row":1,"oeis_offset":0,"reversed":false,"trim_zeros":"none","regular_triangle":true,"rows_shown":10,"polytool_commit":"c48629374597092cc41ef4d6273f37991516f984","triangle_example":"Triangle begins:\n  0: 1;\n  1: 1,     2;\n  2: 1,    16,       12;\n  3: 1,    66,      284,        120;\n  4: 1,   224,     2872,       5952,        1680;\n  5: 1,   706,    21080,     116336,      146064,        30240;\n  6: 1,  2160,   132228,    1531072,     4804656,      4130304,       665280;\n  7: 1,  6530,   760500,   16271080,   101422640,    208791648,    132557760,     17297280;\n  8: 1, 19648,  4155120,  151922560,  1661273440,   6556459008,   9657333504,   4766423040,    518918400;\n  9: 1, 59010, 21993776, 1304454880, 23155279200, 155184721088, 427142449920, 477104352768, 189945688320, 17643225600;\n","recurrence_sentence":"The row polynomials satisfy P(n,x) = (1+(8*n-6)*x)*P(n-1,x) + (2*x-4*x^2)*d/dx P(n-1,x) for n >= 1, with P(0,x) = 1.","mathematica":"P[0, x_] := 1;\nP[n_, x_] := P[n, x] = Expand[(1 + (8*n - 6)*x)*P[n - 1, x] + (2*x - 4*x^2)*D[P[n - 1, x], x]];\nTable[PadRight[CoefficientList[P[n, x], x], n + 1], {n, 0, 9}] // Flatten","pari":"P(N) = {my(v = vector(N + 1)); 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