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A275182 Number of nX7 0..2 arrays with no element equal to any value at offset (-2,-1) (-1,0) or (-1,1) and new values introduced in order 0..2. 1
365, 4096, 4021, 5653, 25241, 117916, 561044, 2688402, 12931103, 62408531, 302138208, 1466387881, 7128875693, 34691973269, 168923525976, 822823965071, 4008952988381, 19536216274450, 95219416747615, 464168982600409 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A275183.

LINKS

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

R. H. Hardin, Empirical recurrence

FORMULA

Empirical recurrence of order 67 (see link above)

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A275183.

Sequence in context: A259948 A203806 A251314 * A275130 A274727 A175113

Adjacent sequences:  A275179 A275180 A275181 * A275183 A275184 A275185

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 19 2016

STATUS

approved

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Last modified November 28 00:12 EST 2021. Contains 349395 sequences. (Running on oeis4.)