A186956 1/729 the number of (n+2)X5 0..2 arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace

831, 112707, 5903759, 373049827, 22237406277, 1352397401223, 81727735220193, 4949074316433529, 299482222563196133, 18126731672199604237, 1097073061584956632581, 66399141979879392520485

Offset

1,1

Comments

Column 3 of A186962

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

Some solutions for 4X5
..0..0..1..0..0....0..1..0..1..2....1..0..0..2..2....1..0..0..2..0
..0..0..0..0..2....0..0..0..2..2....0..0..1..0..1....0..0..1..1..0
..0..0..2..1..0....0..0..2..1..0....0..0..1..1..2....0..0..0..0..2
..0..0..2..0..1....0..0..2..0..1....0..0..2..1..0....0..0..2..2..2

Crossrefs

Sequence in context: A125519 A351666 A045070 * A252561 A264318 A264141

Adjacent sequences: A186953 A186954 A186955 * A186957 A186958 A186959

Keyword

nonn

Author

R. H. Hardin Mar 01 2011

Status

approved