A172559 Number of 2*n X 14 binary arrays with row sums 7 and column sums n.
1, 3432, 936369720, 1026608414145600, 2128370421607383353400, 6368685647203261761403856832, 24197157773366540262083203214418624, 108738182111446498614705217754614976371200, 553419789083994907139302477834526824481001555000
Offset: 0
Keywords
Links
- Christoph Koutschan, Table of n, a(n) for n = 0..30 (terms n=1..16 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=7 of A376935.
Extensions
a(0)=1 prepended by Andrew Howroyd, Oct 12 2024