A268104 Number of 1Xn 0..n arrays with every repeated value in every row and column greater than or equal to the previous repeated value.

2, 9, 64, 615, 7536, 112476, 1981512, 40265487, 927338710, 23873974553, 679478391252, 21185458961316, 718142599280848, 26296505423775240, 1034431689380433024, 43505385550994833263, 1948060006167232265688

Offset

1,1

Comments

Row 1 of A268103.

Links

R. H. Hardin, Table of n, a(n) for n = 1..193

Example

Some solutions for n=5
..0..2..1..4..5....2..3..2..1..5....2..3..0..5..2....2..5..0..5..3

Crossrefs

Cf. A268103.

Sequence in context: A059281 A269612 A269577 * A269683 A331658 A269487

Adjacent sequences: A268101 A268102 A268103 * A268105 A268106 A268107

Keyword

nonn

Author

R. H. Hardin, Jan 26 2016

Status

approved