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A237791 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the minimum minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one 6
256, 1902, 1902, 14369, 26230, 14369, 108626, 367726, 367726, 108626, 822482, 5195344, 9679862, 5195344, 822482, 6206506, 73170922, 256311790, 256311790, 73170922, 6206506, 46951577, 1029281994, 6776019974, 12795841200, 6776019974 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.........256...........1902.............14369..............108626

........1902..........26230............367726.............5195344

.......14369.........367726...........9679862...........256311790

......108626........5195344.........256311790.........12795841200

......822482.......73170922........6776019974........635807130472

.....6206506.....1029281994......178512761384......31548627779530

....46951577....14489762434.....4719215160352....1566949786889880

...354492388...204068007444...124491992110564...77875021827170574

..2682430004..2873241939356..3291189351446428.3868675262695142732

.20249512232.40449727138522.86781113390907628

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..83

FORMULA

Empirical for column k:

k=1: [linear recurrence of order 30]

EXAMPLE

Some solutions for n=2 k=4

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

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

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

CROSSREFS

Sequence in context: A206752 A237539 A206745 * A237786 A238063 A238058

Adjacent sequences: A237788 A237789 A237790 * A237792 A237793 A237794

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Feb 13 2014

STATUS

approved

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Last modified December 1 04:36 EST 2022. Contains 358454 sequences. (Running on oeis4.)