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A377006
Number of inequivalent 2*n X 12 binary arrays with row sums 6 and column sums n up to row and column permutations.
1
1, 1, 7, 132, 65548, 128665248, 294494683312, 607662931576945, 1078571634893111039, 1641745848357513999450, 2157522985252158679423406, 2468770667797731319051018701, 2480199767193520485788791333065
OFFSET
0,3
CROSSREFS
Column k=6 of A377007.
Cf. A172558.
Sequence in context: A220321 A247597 A305955 * A051832 A103050 A110111
KEYWORD
nonn,more
AUTHOR
Andrew Howroyd, Oct 12 2024
STATUS
approved