A371507 - OEIS

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A371507

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

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

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OFFSET

1,2

LINKS

Table of n, a(n) for n=1..86.

FORMULA

(this constant) - (constant in A371506) = 1.00000055114638447971781305611...

EXAMPLE

1.5083336089065283846494942069068850353...

MATHEMATICA

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

First[RealDigits[s]]