A233105 - OEIS

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A233105

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

1, 19, 24912, 794723482, 457873555330159, 4655818309443587944819, 835153023014356911992288011287, 2642740111638617064845250032401005032917, 147523503812676026261878057522783598121057848912309

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Diagonal of A233113

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=3

..0..1..5....0..1..0....0..1..2....0..1..2....0..1..5....0..0..0....0..1..0

..4..2..4....1..5..4....4..3..1....2..1..2....2..1..1....0..1..1....4..2..2

..0..2..4....0..4..4....5..1..1....4..3..4....2..2..1....0..0..2....2..5..4

CROSSREFS

Sequence in context: A203581 A125043 A249907 * A013528 A172762 A203703

Adjacent sequences: A233102 A233103 A233104 * A233106 A233107 A233108

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 04 2013

STATUS

approved