A172560 Number of 2*n X 16 binary arrays with row sums 8 and column sums n.

1, 12870, 27770358330, 297348703692826500, 6637298299496411164868250, 226226183763370772622682749527820, 10156485647319165206190655366818708639900, 553419789083994907139302477834526824481001555000, 34812290428176298285394893936773707951192224124239796250

Offset

0,2

Links

Christoph Koutschan, Table of n, a(n) for n = 0..25 (terms n=1..13 from R. H. Hardin)

Robert Dougherty-Bliss, Christoph Koutschan, Natalya Ter-Saakov, and Doron Zeilberger, The (Symbolic and Numeric) Computational Challenges of Counting 0-1 Balanced Matrices, arXiv:2410.07435 [math.CO], 2024.

Crossrefs

Column k=8 of A376935.

Sequence in context: A177311 A177312 A172609 * A031805 A244171 A245793

Adjacent sequences: A172557 A172558 A172559 * A172561 A172562 A172563

Keyword

nonn

Author

R. H. Hardin, Feb 06 2010

Extensions

a(0)=1 prepended by Andrew Howroyd, Oct 12 2024

Status

approved