A371465 Decimal expansion of Product_{k>=1} (1 - 1/(2*k+1)^6).

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

Offset

0,1

Links

Table of n, a(n) for n=0..99.

Formula

Equals (1/24) * Pi * cosh(sqrt(3)*Pi/2).

Example

0.9985530274491360545713131760527821550224491...

Mathematica

RealDigits[(1/24) Pi Cosh[Sqrt[3] Pi/2], 10, 100][[1]]

Crossrefs

Cf. A003881, A175617, A258871, A371219.

Sequence in context: A051554 A146493 A347055 * A346727 A346438 A304029

Adjacent sequences: A371462 A371463 A371464 * A371466 A371467 A371468

Keyword

nonn,cons

Author

Ilya Gutkovskiy, Mar 31 2024

Status

approved