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A058408
Number of 3 X n nonnegative integer matrices with all column sums 4, up to row and column permutation.
+0
3
1, 4, 26, 129, 546, 2010, 6615, 19650, 53790, 137035, 328262, 745078, 1613072, 3348198, 6693822, 12937656, 24253200, 44219610, 78604130, 136511100, 232054284
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 6 22:55 EST 2009. Contains 170429 sequences.
AT&T Labs Research
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