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 A139769 A triangle of coefficients of the term-like derivatives of A008302 ( Mahonian numbers): p(x,n)=product( sum(d/dx*(x^i),(i,0,m+1)),(m,0,n)). 0
 1, 1, 2, 1, 4, 7, 6, 1, 6, 18, 36, 49, 46, 24, 1, 8, 33, 94, 204, 354, 497, 562, 501, 326, 120, 1, 10, 52, 188, 528, 1222, 2406, 4102, 6116, 7996, 9132, 9014, 7541, 5116, 2556, 720, 1, 12, 75, 326, 1105, 3106, 7513, 16014, 30558, 52752, 82938, 119230, 156983 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Row sums are: {1, 3, 18, 180, 2700, 56700, 1587600, 57153600, 2571912000, 141455160000, 9336040560000} LINKS Table of n, a(n) for n=1..54. FORMULA p(x,n)=product( sum(d/dx*(x^i),(i,0,m+1)),(m,0,n)); Out_n,m=Coefficient(p(x,n)). EXAMPLE {1}, {1, 2}, {1, 4, 7, 6}, {1, 6, 18, 36, 49, 46, 24}, {1, 8, 33, 94, 204, 354, 497, 562, 501, 326, 120}, {1, 10, 52, 188, 528, 1222, 2406, 4102, 6116, 7996, 9132, 9014, 7541, 5116, 2556, 720}, {1, 12, 75, 326, 1105, 3106, 7513, 16014, 30558, 52752, 82938, 119230, 156983,189158, 207915, 207178, 185285, 146308, 99143, 54748, 22212, 5040}, MATHEMATICA a = Table[CoefficientList[Product[Sum[D[x^i, x], {i, 0, m + 1}], {m, 0, n}], x], {n, 0, 10}] Flatten[a] CROSSREFS Cf. A008302 ( Mahonian numbers). Sequence in context: A322941 A217205 A358566 * A357470 A326894 A275778 Adjacent sequences: A139766 A139767 A139768 * A139770 A139771 A139772 KEYWORD nonn,uned,tabf AUTHOR Roger L. Bagula, Jun 13 2008 STATUS approved

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Last modified March 2 05:08 EST 2024. Contains 370460 sequences. (Running on oeis4.)