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A252846
Number of (2+2)X(n+2) 0..3 arrays with every consecutive three elements in every row and diagonal having one or two distinct values, and in every column and antidiagonal having two or three distinct values, and new values 0 upwards introduced in row major order
1
24951, 510488, 10339272, 211956317, 4399478503, 91508212229, 1899442031533, 39473901606827, 820481977746360, 17052636742617510, 354435913127430588, 7367086725869394640, 153127676728925828062, 3182825252631739077552
OFFSET
1,1
COMMENTS
Row 2 of A252844
LINKS
EXAMPLE
Some solutions for n=1
..0..1..0....0..0..1....0..1..0....0..1..1....0..0..1....0..0..1....0..0..0
..2..2..1....0..2..0....1..2..2....2..0..0....1..0..1....1..2..1....1..2..1
..2..2..2....2..0..2....0..3..0....0..0..0....2..3..2....0..1..0....1..1..2
..3..3..0....3..0..3....3..3..3....3..2..2....3..2..3....2..1..2....0..3..3
CROSSREFS
Sequence in context: A138717 A139776 A214013 * A031651 A263815 A125268
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 22 2014
STATUS
approved