A265980 Number of nX6 integer arrays with each element equal to the number of horizontal, diagonal and antidiagonal neighbors less than itself.

55, 52555, 8061815, 3698768651, 1978988798923, 809078767234538, 379214568001506095, 181393966278900942665, 83340040710624348072169

Offset

1,1

Comments

Column 6 of A265981.

Links

Table of n, a(n) for n=1..9.

Example

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

Crossrefs

Cf. A265981.

Sequence in context: A196428 A231907 A027580 * A287053 A046194 A172808

Adjacent sequences: A265977 A265978 A265979 * A265981 A265982 A265983

Keyword

nonn

Author

R. H. Hardin, Dec 19 2015

Status

approved