A204054 Number of (n+2)X8 0..3 arrays with every 3X3 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..3 introduced in row major order

37451727, 361569647, 2404876738, 18005605178, 135508809479, 1065898305547, 7515064468455, 56550046316647, 410996187334882, 3091339683357650, 22420992321577490, 166361632260722451, 1212902396590177130

Offset

1,1

Comments

Column 6 of A204056

Links

R. H. Hardin, Table of n, a(n) for n = 1..18

Example

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

Crossrefs

Sequence in context: A215130 A286037 A034645 * A206196 A272517 A246232

Adjacent sequences: A204051 A204052 A204053 * A204055 A204056 A204057

Keyword

nonn

Author

R. H. Hardin Jan 09 2012

Status

approved