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A253032
Number of (n+2)X(4+2) 0..2 arrays with every consecutive three elements in every row and column having exactly two distinct values, and new values 0 upwards introduced in row major order
1
50571, 802899, 12647772, 199953846, 3170197872, 50259172356, 797070583521, 12643671566241, 200567370213594, 3181733456490459, 50474910281438925, 800736037603303626, 12702959834316206535, 201521446271002086849
OFFSET
1,1
COMMENTS
Column 4 of A253035
FORMULA
Empirical recurrence of order 72 (see link above)
EXAMPLE
Some solutions for n=1
..0..1..1..0..1..1....0..0..1..1..0..1....0..1..0..0..1..1....0..0..1..1..2..2
..0..2..2..1..2..1....0..2..2..1..1..2....2..0..2..2..1..1....1..0..1..1..0..1
..1..2..2..0..2..2....1..2..2..0..0..1....0..0..2..2..0..2....1..1..2..2..0..2
CROSSREFS
Sequence in context: A029823 A302902 A317285 * A251486 A376929 A268469
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 26 2014
STATUS
approved