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A346439
Decimal expansion of the constant Sum_{k>=0} (-1)^k/(5*k)!.
9
9, 9, 1, 6, 6, 6, 9, 4, 2, 2, 3, 9, 0, 9, 4, 1, 9, 0, 5, 6, 3, 4, 2, 2, 9, 0, 8, 4, 5, 3, 9, 8, 6, 2, 0, 5, 3, 1, 7, 5, 9, 1, 5, 2, 5, 0, 6, 7, 8, 0, 8, 3, 9, 3, 3, 5, 8, 1, 3, 5, 9, 3, 9, 3, 7, 7, 8, 5, 4, 7, 5, 0, 2, 8, 2, 5, 5, 9, 2, 0, 8, 1, 8, 6, 3, 8, 9
OFFSET
0,1
EXAMPLE
0.9916669422390941905634229...
MATHEMATICA
RealDigits[HypergeometricPFQ[{}, {1/5, 2/5, 3/5, 4/5}, -1/5^5], 10, 120][[1]] (* Amiram Eldar, Jun 04 2023 *)
PROG
(PARI) sumalt(k=0, (-1)^k/(5*k)!) \\ Michel Marcus, Jul 18 2021
KEYWORD
nonn,cons
AUTHOR
Sean A. Irvine, Jul 17 2021
STATUS
approved