A230907 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A230907

Number of nX5 0..3 arrays x(i,j) with each element horizontally, vertically or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, no adjacent elements equal, and upper left element zero.

1

0, 84, 634, 4308, 30304, 219696, 1603356, 11727974, 85870504, 629050716, 4609162588, 33775007838, 247504872508, 1813755858252, 13291604028764, 97404233447816, 713804471793532, 5230957793540932, 38333938333202052

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

OFFSET

1,2

COMMENTS

Column 5 of A230910

LINKS

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

R. H. Hardin, Empirical recurrence of order 89

FORMULA

Empirical recurrence of order 89 (see link above)

EXAMPLE

Some solutions for n=4

..0..1..0..2..3....0..3..1..0..1....0..1..2..1..0....0..2..0..1..2

..3..2..3..1..0....1..2..3..2..0....2..3..0..2..3....1..3..2..3..1

..0..1..0..2..3....0..1..0..1..3....0..1..3..1..2....0..1..0..2..0

..3..2..3..1..2....2..3..2..0..2....3..2..0..3..1....3..2..1..3..2

CROSSREFS

Sequence in context: A238523 A238518 A264654 * A220016 A219827 A219719

Adjacent sequences: A230904 A230905 A230906 * A230908 A230909 A230910

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 01 2013

STATUS

approved