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A331716
Number of nonequivalent binary matrices with n distinct columns and any number of distinct nonzero rows with 3 ones in every column up to permutation of rows and columns.
1
1, 0, 0, 3, 19, 141, 1571, 21928
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OFFSET
0,4
LINKS
Table of n, a(n) for n=0..7.
CROSSREFS
Row n=3 of
A331509
.
Sequence in context:
A221266
A082758
A110525
*
A058859
A291964
A333094
Adjacent sequences:
A331713
A331714
A331715
*
A331717
A331718
A331719
KEYWORD
nonn
,
more
AUTHOR
Andrew Howroyd
, Feb 01 2020
STATUS
approved
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Last modified September 8 05:26 EDT 2024. Contains 375751 sequences. (Running on oeis4.)