A252990 Number of (n+2)X(4+2) 0..2 arrays with every consecutive three elements in every row and column having exactly 2 distinct values, in every diagonal 1 or 2 distinct values, in every antidiagonal 2 or 3 distinct values, and new values 0 upwards introduced in row major order

15395, 136697, 1350439, 14090659, 147972602, 1564485159, 16592413774, 176117806795, 1870443952223, 19874156580697, 211183824250129, 2244286096397298, 23852873329425588, 253514027450350026

Offset

1,1

Comments

Column 4 of A252993

Links

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

Example

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

Crossrefs

Sequence in context: A054837 A345562 A345817 * A252842 A261724 A031637

Adjacent sequences: A252987 A252988 A252989 * A252991 A252992 A252993

Keyword

nonn

Author

R. H. Hardin, Dec 25 2014

Status

approved