A371506 Decimal expansion of Sum_{k>=0} (-1)^k /(k^2 + 1)!.

5, 0, 8, 3, 3, 3, 0, 5, 7, 7, 6, 0, 1, 4, 3, 9, 0, 4, 9, 3, 1, 6, 8, 1, 1, 5, 0, 8, 0, 1, 3, 0, 8, 0, 2, 9, 1, 9, 5, 2, 1, 2, 4, 3, 0, 6, 5, 9, 8, 1, 5, 5, 7, 2, 6, 4, 9, 9, 1, 8, 5, 4, 8, 6, 6, 3, 0, 9, 0, 3, 3, 7, 9, 8, 6, 4, 6, 7, 5, 8, 4, 6, 4, 5, 3, 6

Offset

0,1

Links

Table of n, a(n) for n=0..85.

Formula

(constant in A371507) - (this constant) = 1.00000055114638447971781305611...

Example

0.508333057760143904931681150801...

Mathematica

s = N[Sum[(-1)^k/((k^2 + 1)!), {k, 0, Infinity}], 120]
First[RealDigits[s]]

Crossrefs

Cf. A371507.

Sequence in context: A078119 A085998 A094886 * A371507 A143821 A099219

Adjacent sequences: A371503 A371504 A371505 * A371507 A371508 A371509

Keyword

nonn,cons

Author

Clark Kimberling, Apr 10 2024

Status

approved