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A234123
Number of (n+1)X(n+1) 0..6 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1
0
91, 4757, 951709, 753253097, 2369586581169, 29777695096321851, 1499309201721436345531, 303126582922004534372454101, 246491114964153072540340892486965
OFFSET
1,1
COMMENTS
Diagonal of A234131
EXAMPLE
Some solutions for n=2
..4..3..4....5..4..4....3..2..2....1..1..1....4..4..4....6..5..5....5..5..5
..4..4..4....4..4..5....2..2..1....2..2..1....4..4..3....6..5..4....5..5..5
..5..4..4....3..4..5....1..2..2....2..1..2....5..4..4....6..5..5....4..5..4
CROSSREFS
Sequence in context: A017754 A283383 A004380 * A103855 A238541 A217853
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 19 2013
STATUS
approved