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A269281 Number of 6Xn 0..3 arrays with some element plus some horizontally or antidiagonally adjacent neighbor totalling three exactly once. 1
0, 2598156, 938176344, 279339197256, 75556007986536, 19356924219624936, 4786284820998999528, 1154228064358389881112, 273210106596010141952520, 63745055133289730721040968, 14703244384392257014503473256 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 6 of A269276.

LINKS

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

R. H. Hardin, Empirical recurrence of order 40

FORMULA

Empirical recurrence of order 40 (see link above)

EXAMPLE

Some solutions for n=2

..0..0. .0..0. .0..0. .0..0. .0..0. .0..0. .0..0. .0..0. .0..0. .0..0

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

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

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

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

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

CROSSREFS

Cf. A269276.

Sequence in context: A237920 A317615 A250706 * A186588 A204882 A183660

Adjacent sequences:  A269278 A269279 A269280 * A269282 A269283 A269284

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 21 2016

STATUS

approved

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Last modified August 9 09:22 EDT 2022. Contains 356021 sequences. (Running on oeis4.)