A370465 Decimal expansion of Product_{k>=2} 1 / (1 - 1/(2*k-1)!!).
1, 6, 2, 4, 4, 8, 4, 1, 5, 2, 3, 4, 5, 4, 5, 5, 8, 4, 2, 4, 5, 0, 8, 8, 2, 1, 6, 9, 9, 7, 9, 7, 2, 3, 7, 4, 9, 9, 0, 1, 9, 4, 5, 7, 1, 0, 0, 5, 3, 5, 6, 6, 7, 3, 9, 3, 3, 3, 0, 9, 9, 1, 4, 8, 0, 8, 7, 1, 6, 2, 2, 7, 9, 1, 4, 4, 9, 7, 0, 6, 6, 5, 5, 3, 7, 8, 7, 4, 0, 8, 3, 5, 2, 3, 7, 6, 5, 8, 8, 9
Offset: 1
Examples
1.6244841523454558424508821699797237499...