A172762 Number of 2*n X n 0..3 arrays with row sums n and column sums 2*n

1, 19, 28681, 3017084995, 37642786694586601, 58256290618618126540488181, 11402923087449460426136950157514212457, 300748551220458753215613602117054376767307058363395

Offset

1,2

Links

R. H. Hardin, Table of n, a(n) for n=1..10

Crossrefs

Sequence in context: A249907 A233105 A013528 * A203703 A068734 A216529

Adjacent sequences: A172759 A172760 A172761 * A172763 A172764 A172765

Keyword

nonn

Author

R. H. Hardin Feb 06 2010

Status

approved