A269200 Number of n X 7 0..3 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling three no more than once.

8748, 3212820, 1184381844, 399104835612, 128136007344516, 39825831571425924, 12093315071771856492, 3608384928930423012804, 1062048602869077147571956, 309185374985245150329134076, 89206481105125372533736647588

Offset

1,1

Comments

Column 7 of A269201.

Links

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

Example

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

Crossrefs

Cf. A269201.

Sequence in context: A183361 A269193 A269142 * A269108 A269288 A234148

Adjacent sequences: A269197 A269198 A269199 * A269201 A269202 A269203

Keyword

nonn

Author

R. H. Hardin, Feb 20 2016

Status

approved