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A017131
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a(n) = (8*n + 5)^7.
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1
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78125, 62748517, 1801088541, 17249876309, 94931877133, 373669453125, 1174711139837, 3142742836021, 7446353252589, 16048523266853, 32057708828125, 60170087060757, 107213535210701, 182803912081669
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OFFSET
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0,1
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LINKS
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FORMULA
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G.f.: ( 78125 + 62123517*x + 1301287905*x^2 + 4593751457*x^3 + 3854897607*x^4 + 738035607*x^5 + 19469675*x^6 + 2187*x^7 ) / ( (x-1)^8 ). - R. J. Mathar, May 08 2015
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MATHEMATICA
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(8*Range[0, 20]+5)^7 (* or *) LinearRecurrence[{8, -28, 56, -70, 56, -28, 8, -1}, {78125, 62748517, 1801088541, 17249876309, 94931877133, 373669453125, 1174711139837, 3142742836021}, 20] (* Harvey P. Dale, Jul 09 2021 *)
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PROG
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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