A046169 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A046169

Number of minimal covers on n objects with 9 members.

2

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

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,10

LINKS

Table of n, a(n) for n=1..18.

Eric Weisstein's World of Mathematics, Minimal Cover.

FORMULA

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

CROSSREFS

Sequence in context: A187356 A187354 A160757 * A209782 A058908 A271171

Adjacent sequences: A046166 A046167 A046168 * A046170 A046171 A046172

KEYWORD

nonn

AUTHOR

Eric W. Weisstein

STATUS

approved