A233991 Number of (n+1)X(2+1) 0..6 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 18

774, 3040, 11622, 51026, 218602, 1058618, 4923910, 25667010, 126489782, 690800294, 3533497602, 19797058950, 103613461346, 587718236894, 3119919914130, 17784977065082, 95276354415258, 543743313418490

Offset

1,1

Comments

Column 2 of A233997

Links

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

Example

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

Crossrefs

Sequence in context: A060825 A255156 A365597 * A250087 A252673 A077077

Adjacent sequences: A233988 A233989 A233990 * A233992 A233993 A233994

Keyword

nonn

Author

R. H. Hardin, Dec 18 2013

Status

approved