A233660 Number of (n+1)X(2+1) 0..6 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 26

1220, 8324, 56212, 411848, 3007000, 22597004, 168812492, 1277805668, 9619090052, 72923111912, 550545635664, 4173813523988, 31551152184268, 239127142655612, 1808804180109732, 13705085820170408, 103705720260565068

Offset

1,1

Comments

Column 2 of A233665

Links

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

R. H. Hardin, Empirical recurrence of order 74

Formula

Empirical recurrence of order 74 (see link above)

Example

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

Crossrefs

Sequence in context: A293479 A031781 A069400 * A015279 A179140 A091790

Adjacent sequences: A233657 A233658 A233659 * A233661 A233662 A233663

Keyword

nonn

Author

R. H. Hardin, Dec 14 2013

Status

approved