A232321 Number of (5+1) X (n+1) 0..1 arrays with every element equal to some horizontal or antidiagonal neighbor, with top left element zero.

89, 2640, 90157, 3815483, 161243887, 6736602042, 281959315373, 11801434817942, 493946679273719, 20673894894951135, 865297397287880776, 36216658523348672068, 1515833034012979726393, 63444555196518747182748

Offset

1,1

Comments

Row 5 of A232316.

Links

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

Example

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

Crossrefs

Cf. A232316.

Sequence in context: A054680 A189453 A197362 * A264161 A264068 A189020

Adjacent sequences: A232318 A232319 A232320 * A232322 A232323 A232324

Keyword

nonn

Author

R. H. Hardin, Nov 22 2013

Status

approved