A046169 Number of minimal covers on n objects with 9 members.

0, 0, 0, 0, 0, 0, 0, 0, 1, 5065, 14109865, 28586753635, 47057782540912, 66738127617591430, 84508389361603849070, 97838285747685771503930, 105306724888534860425617883, 106678207181565103216667658695

Offset: 1

Author

Eric W. Weisstein

Keywords

• nonn

Links

• Eric Weisstein's World of Mathematics, Minimal Cover.

Crossrefs

Cf. A035348.

Formula

G.f.: x^9 / Product_{k=2^9-10..2^9-1} (1-k*x). - Sean A. Irvine, Apr 07 2021