A172936 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A172936

Number of 3*n X n 0..7 arrays with row sums 7 and column sums 21

1, 18152, 513799394688, 3453235602818369547520, 1835784677576057001102381224194900, 37246115504386074787217299933684238287194514560

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

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

CROSSREFS

Sequence in context: A251832 A250639 A205242 * A025029 A230948 A030331

Adjacent sequences: A172933 A172934 A172935 * A172937 A172938 A172939

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2010

STATUS

approved