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Gamma(c z) with c != 0 has the roots of Gamma divided by c","lean_route":null,"lean_declarations":[],"certificate_hash":"e0f7f4ed55dc9253517a765c2727944547f55cab72ae49fd39d73d2d0fe1db4e","verification_polytool":"replayed","verification_lean":"not_attempted","claims":[{"claim":"real_rooted","from_index":0,"region":{"upper":{"closed":true,"value":"0"}}}],"premises":[{"position":0,"node_id":"n-5b7da9f56b3380cb","role":"sequence","name":"Triangle read by rows: T(n,k) = t(n-k, k); t(n,m) = f(m)*t(n-1,m) + f(n)*t(n,m-1), where f(x) = 7*x + 2.","uses":{"claim":"real_rooted","from_index":0,"region":{"upper":{"closed":true,"value":"0"}}},"uses_text":"Every row P_n, n >= 0, is zero or real-rooted with all roots in (-inf, 0]"}]}],"used_by":[],"used_by_total":0,"links":[],"oeis":[],"bfiles":[],"oeis_texts":[{"oeis_id":"","target":"node","first_row":0,"oeis_offset":0,"reversed":false,"trim_zeros":"none","regular_triangle":false,"rows_shown":10,"polytool_commit":"c48629374597092cc41ef4d6273f37991516f984","triangle_example":"Triangle begins:\n  0:   1;\n  1:   2;\n  2:   4,        28;\n  3:   8,       364;\n  4:  16,      3612,        5096;\n  5:  32,     33404,      182672;\n  6:  64,    302876,     4325720,      2557408;\n  7: 128,   2731260,    86172576,    179940544;\n  8: 256,  24593884,  1569949416,   7757880704,   2519167616;\n  9: 512, 221373628, 27185076912, 266348423488, 292795688192;\n","recurrence_sentence":"The row polynomials satisfy P(n,x) = (2+(14*n-14)*x)*P(n-1,x) + (7*x-28*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[(2 + (14*n - 14)*x)*P[n - 1, x] + (7*x - 28*x^2)*D[P[n - 1, x], x]];\nTable[CoefficientList[P[n, x], x], {n, 0, 9}] // Flatten","pari":"P(N) = {my(v = vector(N + 1)); v[1] = 1; for(n = 1, N, my(i = n + 1); v[i] = (2 + (14*n - 14)*x)*v[i - 1] + (7*x - 28*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 - 1, v[i])))};\nT(9)","reading":{"first_row":0,"offset":0,"reversed":false,"trim_zeros":"none","regular_triangle":false}}],"derivation":{"root":"n-5b7da9f56b3380cb","steps":["\u03b3"],"edges":["e-f8caac77b40c1335"],"text":"A257617 \u2192 \u03b3"},"headline":"A257617 \u2192 \u03b3","chain":null}