A268105 Number of 2Xn 0..n arrays with every repeated value in every row and column greater than or equal to the previous repeated value.

4, 81, 4096, 378225, 56791296, 12650850576, 3926389806144, 1621309443347169, 859957083064464100, 569966660957291549809, 461690884178405990127504, 448823671401604409584451856, 515728792901852626366779599104

Offset

1,1

Comments

Row 2 of A268103.

Links

R. H. Hardin, Table of n, a(n) for n = 1..26

Example

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

Crossrefs

Cf. A268103.

Sequence in context: A128911 A268206 A337155 * A068087 A324088 A357513

Adjacent sequences: A268102 A268103 A268104 * A268106 A268107 A268108

Keyword

nonn

Author

R. H. Hardin, Jan 26 2016

Status

approved