A190584 Bisection of A013697.

4, 27, 119, 497, 2023, 8149, 32692, 130938, 524050, 2096730, 8387859, 33553102, 134215364, 536866711, 2147476180, 8589921317, 34359714770, 137438911520, 549755739309, 2199023122967, 8796092786503, 35184371669802, 140737487610388, 562949952096975

Offset: 1

Author

N. J. A. Sloane, May 13 2011

Keywords

• nonn

Formula

a(n) = floor(1/(zeta(2n+1)-1)).