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A259473 Irregular triangle read by rows of coefficients arising in the enumeration of doubly stochastic matrices of integers. 0
1, 1, 1, 1, 1, 14, 87, 148, 87, 14, 1, 1, 103, 4306, 63110, 388615, 1115068, 1575669, 1115068, 388615, 63110, 4306, 103, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,6

LINKS

Table of n, a(n) for n=2..25.

D. M. Jackson and G. H. J. van Rees, The enumeration of generalized double stochastic nonnegative integer square matrices, SIAM J. Comput., 4 (1975), 474-477, doi:10.1137/0204040.

D. M. Jackson & G. H. J. van Rees, The enumeration of generalized double stochastic nonnegative integer square matrices, SIAM J. Comput., 4.4 (1975), 474-477. (Annotated scanned copy)

EXAMPLE

Triangle begins:

1,

1,1,1,

1,14,87,148,87,14,1,

1,103,4306,63110,388615,1115068,1575669,1115068,388615,63110,4306,103,1,

...

CROSSREFS

Sequence in context: A206614 A321941 A116343 * A202785 A255535 A034544

Adjacent sequences:  A259470 A259471 A259472 * A259474 A259475 A259476

KEYWORD

nonn,tabf,more

AUTHOR

N. J. A. Sloane, Jul 03 2015

STATUS

approved

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Last modified April 6 22:23 EDT 2020. Contains 333291 sequences. (Running on oeis4.)