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A172751 Number of 2*n X n 0..3 arrays with row sums 4 and column sums 8 1
0, 19, 81225, 3017084995, 635481090640800, 570651583984812418275, 1771064195990555279483745075, 16202379114136976323568007348596250, 385904790671942888212671079168713127308000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

R. H. Hardin, Table of n, a(n) for n=1..24

CROSSREFS

Sequence in context: A182374 A034207 A098970 * A013764 A078353 A177818

Adjacent sequences:  A172748 A172749 A172750 * A172752 A172753 A172754

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2010

STATUS

approved

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Last modified June 17 05:45 EDT 2021. Contains 345080 sequences. (Running on oeis4.)