A233088 Number of 7Xn 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally or antidiagonally, top left element zero, and 1 appearing before 2 in row major order

2080, 797162, 385947545, 186857377214, 90851753687090, 44211082661517335, 21520525142517911969, 10476403113401723273990, 5100155933741320284692402, 2482895459316107604248640311, 1208744613716844782234220456029

Offset

1,1

Comments

Row 7 of A233082

Links

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

R. H. Hardin, Empirical recurrence of order 52

Formula

Empirical recurrence of order 52 (see link above)

Example

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

Crossrefs

Sequence in context: A233104 A071235 A259414 * A229909 A323813 A323472

Adjacent sequences: A233085 A233086 A233087 * A233089 A233090 A233091

Keyword

nonn

Author

R. H. Hardin, Dec 03 2013

Status

approved