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 A085116 Denominator of G(n)=sum(k=1,n,1/2^k/2*sum(j=0,k-1,1/binomial(2^(k-j)+j,j))). 1
 4, 12, 480, 2880, 171360, 15079680, 2979744768, 256258050048, 2206253681888256, 32081134788337130496, 3025251010540191405772800, 60806680954426264344203059200, 22247876027117358528051602802320179200 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 REFERENCES David H. Bailey and Richard E. Crandall, Random Generators and Normal Numbers, 2000. LINKS M. Beeler, R. W. Gosper and R. Schroeppel, HAKMEM, Cambridge, MA: MIT Artificial Intelligence Laboratory, Memo AIM-239, Feb. 1972, Item 120, page 55.  Also HTML transcription. FORMULA lim n-->oo G(n) = Gamma constant = 0.5772.... PROG (PARI) a(n)=denominator(sum(k=1, n, 1/2^k/2*sum(j=0, k-1, 1/binomial(2^(k-j)+j, j)))) CROSSREFS Cf. A085115 (numerators). Sequence in context: A291098 A009506 A299808 * A104129 A144631 A009516 Adjacent sequences:  A085113 A085114 A085115 * A085117 A085118 A085119 KEYWORD frac,nonn AUTHOR Benoit Cloitre, Aug 10 2003 STATUS approved

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Last modified December 5 18:32 EST 2021. Contains 349557 sequences. (Running on oeis4.)