A266311 - OEIS

A266311

Number of 4Xn arrays containing n copies of 0..4-1 with no element 1 greater than its west neighbor modulo 4 and the upper left element equal to 0.

6, 171, 8190, 442285, 25839438, 1605405629, 103948820622, 6930557596953, 472599444039774, 32808183003171211, 2310785736121024350, 164716310371150628603, 11860112155495496736974, 861339905567424795731145

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OFFSET

1,1

COMMENTS

Row 4 of A266309.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..20

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Cf. A266309.

Sequence in context: A264358 A264796 A266852 * A323820 A317795 A166762

Adjacent sequences: A266308 A266309 A266310 * A266312 A266313 A266314

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 26 2015

STATUS

approved