A266100 Number of nX7 integer arrays with each element equal to the number of horizontal and antidiagonal neighbors exactly one smaller than itself.

25, 680, 16103, 371130, 9880139, 240721036, 6206090116, 154469020054, 3932140956510, 98694163378141, 2499180663254917, 62938133863924662, 1590417698133685623, 40104786316082042055, 1012607062750588012145

Offset

1,1

Comments

Column 7 of A266101.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Cf. A266101.

Sequence in context: A015697 A099365 A215017 * A369141 A266024 A217996

Adjacent sequences: A266097 A266098 A266099 * A266101 A266102 A266103

Keyword

nonn

Author

R. H. Hardin, Dec 21 2015

Status

approved