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A172642 Number of n X 4 0..2 arrays with row sums 4 and column sums n 2
1, 19, 175, 2371, 32611, 481381, 7343449, 115321795, 1849858771, 30189264889, 499616140189, 8365213132981, 141444270208645, 2411829493241299, 41425627536496495, 716068213864217155, 12447291755448613315 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

R. H. Hardin, Table of n, a(n) for n=1..99

CROSSREFS

Sequence in context: A060222 A041690 A217698 * A133740 A125382 A126540

Adjacent sequences:  A172639 A172640 A172641 * A172643 A172644 A172645

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2010

STATUS

approved

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Last modified September 28 20:34 EDT 2022. Contains 357081 sequences. (Running on oeis4.)