A233239 -id:A233239 - cp's OEIS frontend

A233245 Number of 7Xn 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, diagonally or antidiagonally, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.

6896, 53692063, 633724470764, 7415057313896849, 86961450397919224924, 1019972250198681748495759, 11963921132630138069523033663, 140334092336070663237513533114112, 1646091578322294419786739964245190052

Offset: 1

R. H. Hardin, Dec 06 2013

nonn

Row 7 of A233239

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

R. H. Hardin, Table of n, a(n) for n = 1..21

A233233 Number of n X n 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, diagonally or antidiagonally, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.

Original entry on oeis.org

1, 19, 18744, 338046654, 83262848013541, 273407904115337411320, 11963921132630138069523033663, 6976482888479442637729140675454130898

Offset: 1

R. H. Hardin, Dec 06 2013

nonn

Diagonal of A233239

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

cp's OEIS Frontend

A233245 Number of 7Xn 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, diagonally or antidiagonally, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.

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