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A172749 Number of 2*n X n 0..3 arrays with row sums 9 and column sums 18 1
0, 0, 1, 122975608, 552523141020099900, 28004870901329112246159413600, 13286253592938310343269948335403784033355, 48077185419930811359972085602422918530347454406137600 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,4
LINKS
CROSSREFS
Sequence in context: A215264 A307115 A079332 * A172781 A172845 A172888
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 06 2010
STATUS
approved

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Last modified February 26 21:28 EST 2024. Contains 370352 sequences. (Running on oeis4.)