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 A131448 Denominators of n-th approximation of factorial (also called harmonic) expansion of Euler's constant C, called gamma= 0.5772156649... 1
 1, 2, 2, 24, 40, 144, 5040, 40320, 6048, 6048, 19958400, 53222400, 53222400, 87178291200, 118879488000, 5230697472000, 8083805184000, 3201186852864000, 40548366802944000, 2432902008176640000, 17030314057236480000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS For the Havil reference and a W. Lang link see A131447. LINKS Table of n, a(n) for n=1..21. FORMULA a(n)=denominator(r(n)), with r(n):=sum(b(k)/k!,n=1..n) with b(k):= A096622(k) (factorial expansion of gamma). EXAMPLE Rationals r(n): [0, 1/2, 1/2, 13/24, 23/40, 83/144, 2909/5040, 23273/40320, 3491/6048, ...] CROSSREFS Sequence in context: A226243 A226979 A261517 * A156447 A272641 A334123 Adjacent sequences: A131445 A131446 A131447 * A131449 A131450 A131451 KEYWORD nonn,frac,easy AUTHOR Wolfdieter Lang Aug 07 2007 STATUS approved

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Last modified October 1 10:37 EDT 2023. Contains 365819 sequences. (Running on oeis4.)