A233872 Number of (n+1)X(4+1) 0..7 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 21

34416, 155104, 907940, 6887232, 57147272, 530983144, 5012939992, 50952500976, 512188465988, 5479606300380, 57126934560812, 630600586218188, 6718939422891932, 75570674572025348, 815496420906106884

Offset

1,1

Comments

Column 4 of A233875

Links

R. H. Hardin, Table of n, a(n) for n = 1..123

Example

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

Crossrefs

Sequence in context: A238927 A236796 A252241 * A055001 A164556 A344780

Adjacent sequences: A233869 A233870 A233871 * A233873 A233874 A233875

Keyword

nonn

Author

R. H. Hardin, Dec 17 2013

Status

approved