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A017720
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Binomial coefficients C(n,56).
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3
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1, 57, 1653, 32509, 487635, 5949147, 61474519, 553270671, 4426165368, 31966749880, 210980549208, 1285063345176, 7282025622664, 38650751381832, 193253756909160, 914734449370024, 4116305022165108, 17675898036356052
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OFFSET
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56,2
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LINKS
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FORMULA
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G.f.: x^56/(1-x)^57.
E.g.f.: x^56*exp(x)/56!. (End)
Sum_{n>=56} 1/a(n) = 56/55.
Sum_{n>=56} (-1)^n/a(n) = A001787(56)*log(2) - A242091(56)/55! = 2017612633061982208*log(2) - 41018417879588738008814416366926778496 / 29330242629471040257 = 0.9830322375... (End)
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MATHEMATICA
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PROG
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(Sage) [binomial(n, 56) for n in range(56, 74)] # Zerinvary Lajos, May 23 2009
(PARI) for(n=56, 80, print1(binomial(n, 56), ", ")) \\ G. C. Greubel, Nov 03 2018
(Magma) [Binomial(n, 56): n in [56..80]]; // G. C. Greubel, Nov 03 2018
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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