A269205 Number of 5 X n 0..3 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling three no more than once.

1024, 132300, 8314020, 555862380, 34838403756, 2135938293684, 128136007344516, 7568312936979972, 441444334269067260, 25489789190515708236, 1459585457554075237908, 82994548126187965994148

Offset

1,1

Comments

Row 5 of A269201.

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

Crossrefs

Cf. A269201.

Sequence in context: A224394 A224027 A174155 * A224284 A224207 A017033

Adjacent sequences: A269202 A269203 A269204 * A269206 A269207 A269208

Keyword

nonn

Author

R. H. Hardin, Feb 20 2016

Status

approved