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A170768
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G.f.: (1+x)/(1-48*x).
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50
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1, 49, 2352, 112896, 5419008, 260112384, 12485394432, 599298932736, 28766348771328, 1380784741023744, 66277667569139712, 3181328043318706176, 152703746079297896448, 7329779811806299029504, 351829430966702353416192, 16887812686401712963977216
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OFFSET
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0,2
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LINKS
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Vincenzo Librandi, Table of n, a(n) for n = 0..600
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FORMULA
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a(n)= Sum_{k, 0<=k<=n} A097805(n,k)*(-1)^(n-k)*49^k. [From Philippe DELEHAM, Dec 04 2009]
a(0) = 1; for n>0, a(n) = 49*48^(n-1). [From Vincenzo Librandi, Dec 05 2009]
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MATHEMATICA
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CoefficientList[Series[(1 + x)/(1 - 48*x), {x, 0, 30}], x] (* Vincenzo Librandi, Dec 09 2012 *)
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CROSSREFS
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Sequence in context: A170634 A170682 A170730 * A218751 A120999 A087752
Adjacent sequences: A170765 A170766 A170767 * A170769 A170770 A170771
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KEYWORD
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nonn,easy
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AUTHOR
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N. J. A. Sloane, Dec 04 2009
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STATUS
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approved
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