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A222569 Number of n X 4 0..2 arrays with no more than floor(nX4/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order. 1
4, 10, 56, 435, 4790, 50535, 547563, 5815939, 63130202, 676152734, 7328771224, 79083695286, 857913193954, 9302185273377, 101073333908828, 1099637763169027, 11970412457540599, 130557727722965457, 1423911243991041430 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A222573.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..128

EXAMPLE

Some solutions for n=3

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

..0..0..0..0....0..0..0..0....0..0..0..0....2..2..2..2....0..0..0..0

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

CROSSREFS

Cf. A222573.

Sequence in context: A225543 A002290 A336997 * A348514 A254078 A104363

Adjacent sequences:  A222566 A222567 A222568 * A222570 A222571 A222572

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 25 2013

STATUS

approved

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Last modified May 26 13:59 EDT 2022. Contains 354092 sequences. (Running on oeis4.)