1 - (ψ_(1/2)^(0)(1))/log(2)

1.60669515241529176378330152319092458048057967150575643577807955369141842074...

[1; 1, 1, 1, 1, 5, 2, 1, 2, 29, 4, 1, 2, 2, 2, 2, 6, 1, 7, 1, 6, 1, 2, 1, 1, 1, 1, 1, 417, 1, 8, ...]