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Search: id:A053115
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| A053115 |
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a(n) = ((8*n+10)(!^8))/20, related to A034908 ((8*n+2)(!^8) octo- or 8-factorials). |
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+0
2
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| 1, 18, 468, 15912, 668304, 33415200, 1938081600, 127913385600, 9465590534400, 776178423820800, 69856058143872000, 6845893698099456000, 725664731998542336000, 82725779447833826304000
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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Row m=10 of the array A(9; m,n) := ((8*n+m)(!^8))/m(!^8), m >= 0, n >= 0.
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FORMULA
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a(n) =((8*n+10)(!^8))/10(!^8) = A034908(n+2)/10; e.g.f. 1/(1-8*x)^(9/4).
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MATHEMATICA
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s=1; lst={s}; Do[s+=n*s; AppendTo[lst, s], {n, 17, 5!, 8}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Nov 08 2008]
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CROSSREFS
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Cf. A051189, A045755, A034908-12, A034975-6, A053114 (rows m=0..9).
Sequence in context: A116421 A005477 A086501 this_sequence A084273 A027405 A116176
Adjacent sequences: A053112 A053113 A053114 this_sequence A053116 A053117 A053118
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KEYWORD
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easy,nonn
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AUTHOR
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Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de)
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