OFFSET
0,2
COMMENTS
Number of 7 X n binary matrices with at least one 1 in every column up to row and column permutations. - Andrew Howroyd, Feb 28 2023
LINKS
Andrew Howroyd, Table of n, a(n) for n = 0..1000
Vladeta Jovovic, Binary matrices up to row and column permutations
PROG
(PARI) Vec(G(7, x)*(1-x) + O(x^40)) \\ G defined in A028657. - Andrew Howroyd, Feb 28 2023
CROSSREFS
KEYWORD
nonn
AUTHOR
Vladeta Jovovic, Jun 12 2000
EXTENSIONS
a(0)=1 prepended by Alois P. Heinz, Aug 08 2022
Terms a(17) and beyond from Andrew Howroyd, Feb 28 2023
STATUS
approved