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A017761
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Binomial coefficients C(n,97).
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5
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1, 98, 4851, 161700, 4082925, 83291670, 1429840335, 21243342120, 278818865325, 3283866636050, 35137373005735, 344985116783580, 3133614810784185, 26515202245096950, 210227674943268675, 1569699972909739440, 11086006058675034795, 74341452393467880390
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OFFSET
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97,2
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LINKS
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FORMULA
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G.f.: x^97/(1-x)^98.
E.g.f.: x^97*exp(x)/97!. (End)
Sum_{n>=97} 1/a(n) = 97/96.
Sum_{n>=97} (-1)^(n+1)/a(n) = A001787(97)*log(2) - A242091(97)/96! = 7685131763883640746573763182592*log(2) - 1914409165727592211172313915606620151912614909652567393556011239640929 / 359383377472744727652236128532537647200 = 0.9899961107... (End)
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MATHEMATICA
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PROG
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(Sage) [binomial(n, 97) for n in range(97, 112)] # Zerinvary Lajos, May 23 2009
(Magma) [Binomial(n, 97): n in [97..110]]; // G. C. Greubel, Nov 12 2018
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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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