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, 7, 132, 65548, 128665248, 294494683312, 607662931576945, 1078571634893111039, 1641745848357513999450, 2157522985252158679423406, 2468770667797731319051018701, 2480199767193520485788791333065

Offset

0,3

Links

Table of n, a(n) for n=0..12.

Crossrefs

Column k=6 of A377007.

Cf. A172558.

Sequence in context: A220321 A247597 A305955 * A051832 A103050 A110111

Adjacent sequences: A377003 A377004 A377005 * A377007 A377008 A377009

Keyword

nonn,more

Author

Andrew Howroyd, Oct 12 2024

Status

approved