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

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

Links

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

R. H. Hardin, Empirical recurrence of order 68

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

Adjacent sequences: A233851 A233852 A233853 * A233855 A233856 A233857

Keyword

nonn

Author

R. H. Hardin, Dec 16 2013

Status

approved