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A186785 Number of (n+1)X4 0..3 arrays with every 2X2 subblock determinant equal to exactly one or two horizontal and vertical neighbor 2X2 subblock determinants 1
2366, 63504, 696596, 17120960, 281080458, 5705992444, 101397910418, 1975255121820, 36536246624156, 698504377421396, 13068876867153840, 247806236334676870, 4660784800342463574, 88125623567615622304 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A186786

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..40

EXAMPLE

Some solutions for 3X4

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

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

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

CROSSREFS

Sequence in context: A081208 A187238 A247923 * A185607 A068282 A234328

Adjacent sequences:  A186782 A186783 A186784 * A186786 A186787 A186788

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 26 2011

STATUS

approved

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Last modified October 21 09:32 EDT 2014. Contains 248376 sequences.