A233719 Number of (n+1) X (2+1) 0..7 arrays with every 2 X 2 subblock having the sum of the squares of the edge differences equal to 26.

1820, 13588, 101644, 820524, 6622988, 54865696, 453172200, 3781440536, 31469076952, 263046916084, 2194845360332, 18351617350708, 153277905148612, 1281532280178872, 10708142862585556, 89521470426434732, 748155393971878436

Offset

1,1

Comments

Column 2 of A233724.

Links

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

R. H. Hardin, Empirical recurrence of order 90

Formula

Empirical recurrence of order 90 (see link above).

Example

Some solutions for n=3:
..6..6..2....2..2..2....1..4..1....3..5..3....5..4..4....5..2..5....3..1..4
..2..5..2....1..5..1....1..5..1....5..2..0....1..1..5....5..1..5....6..4..2
..4..7..4....4..5..2....2..5..2....3..5..2....5..2..5....4..4..4....4..7..4
..2..5..2....4..1..2....6..5..1....0..2..0....5..1..1....0..3..0....6..4..2

Crossrefs

Sequence in context: A156636 A234660 A238030 * A174770 A218104 A171349

Adjacent sequences: A233716 A233717 A233718 * A233720 A233721 A233722

Keyword

nonn

Author

R. H. Hardin, Dec 15 2013

Status

approved