A172758 Number of 2*n X 6 0..3 arrays with row sums 3 and column sums n

20, 16260, 20933840, 33833709700, 62810128195920, 127676780106968400, 276686670102097569600, 628807365128705353776900, 1482500191777802616831698000, 3598791496054686645936395190160

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n=1..49

Crossrefs

Sequence in context: A201507 A167060 A172661 * A146497 A348144 A060618

Adjacent sequences: A172755 A172756 A172757 * A172759 A172760 A172761

Keyword

nonn

Author

R. H. Hardin Feb 06 2010

Status

approved