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A233854
Number of (n+1)X(2+1) 0..7 arrays with every 2X2 subblock having the sum of the squares of all six edge and diagonal differences equal to 59
1
1040, 4824, 22472, 129728, 699984, 4332592, 24793848, 156146264, 917982376, 5792726088, 34542014432, 217536762520, 1307931723824, 8215494820520, 49649815689616, 311141881967400, 1886646705995688, 11801380127712512
OFFSET
1,1
COMMENTS
Column 2 of A233859
FORMULA
Empirical recurrence of order 68 (see link above)
EXAMPLE
Some solutions for n=4
..6..1..6....2..7..2....5..5..3....5..5..5....6..2..2....6..1..6....1..0..1
..5..3..5....3..3..3....1..6..1....1..6..1....7..6..1....3..5..3....3..5..3
..0..1..0....2..7..2....5..5..3....4..2..2....6..2..4....6..1..0....0..1..0
..3..5..3....6..4..6....6..1..6....6..1..6....4..7..6....5..5..3....3..5..3
..0..1..6....7..2..1....5..5..5....5..5..3....6..2..6....1..6..1....1..0..1
CROSSREFS
Sequence in context: A020395 A069456 A210259 * A168412 A183742 A252618
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 16 2013
STATUS
approved