A233887 Number of (n+1)X(3+1) 0..6 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 30, and no two adjacent values equal

1264, 9376, 65280, 496200, 3580624, 27131156, 197246776, 1489635452, 10865513648, 81862032376, 598379968648, 4500240416436, 32947358044272, 247440445604280, 1813879830869864, 13606842940349600, 99852380084946000

Offset

1,1

Comments

Column 3 of A233892

Links

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

R. H. Hardin, Empirical recurrence of order 58

Formula

Empirical recurrence of order 58 (see link above)

Example

Some solutions for n=3
..2..0..2..6....4..0..1..0....2..0..2..6....3..1..4..5....6..2..0..2
..1..4..1..3....5..2..5..3....1..4..1..3....2..5..6..2....4..5..4..1
..5..6..2..6....1..0..4..0....5..6..2..6....3..1..4..1....0..3..0..2
..1..4..1..3....5..2..5..2....1..3..1..4....6..2..6..2....1..5..4..5

Crossrefs

Sequence in context: A331824 A234676 A237327 * A234147 A252562 A364610

Adjacent sequences: A233884 A233885 A233886 * A233888 A233889 A233890

Keyword

nonn

Author

R. H. Hardin, Dec 17 2013

Status

approved