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A234407 Number of (n+1)X(2+1) 0..6 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 12 and no adjacent elements equal 1
2540, 38236, 578080, 9552088, 160156724, 2732474648, 46838063500, 805631496848, 13873456358988, 239079417935660, 4121153439939600, 71049641967894584, 1224988034617402112, 21121099804239729456, 364172469147540913848 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A234412

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

..6..5..0....2..6..2....3..0..5....1..2..0....0..5..0....2..0..6....6..5..0

..1..6..5....0..2..0....2..5..6....0..6..1....3..6..4....6..3..5....1..6..5

..0..5..0....4..0..4....3..0..2....4..5..0....4..1..0....4..0..6....6..5..0

CROSSREFS

Sequence in context: A254014 A254888 A248997 * A135924 A250686 A307473

Adjacent sequences:  A234404 A234405 A234406 * A234408 A234409 A234410

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 25 2013

STATUS

approved

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Last modified May 26 00:32 EDT 2020. Contains 334613 sequences. (Running on oeis4.)