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A203397 T(n,k)=Number of nXk 0..3 arrays with every nonzero element less than or equal to some NW, E or S neighbor 8
1, 1, 1, 1, 16, 1, 1, 185, 185, 1, 1, 1455, 7785, 1455, 1, 1, 10804, 210342, 210342, 10804, 1, 1, 83876, 5666072, 18530502, 5666072, 83876, 1, 1, 661595, 163500122, 1650100394, 1650100394, 163500122, 661595, 1, 1, 5187181, 4711784187 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,5

COMMENTS

Table starts

.1.......1............1................1....................1

.1......16..........185.............1455................10804

.1.....185.........7785...........210342..............5666072

.1....1455.......210342.........18530502...........1650100394

.1...10804......5666072.......1650100394.........474618867194

.1...83876....163500122.....156174348536......146110498224967

.1..661595...4711784187...14710444493905....45159146324783578

.1.5187181.134023641768.1372836933907585.13840616100127064523

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..180

EXAMPLE

Some solutions for n=4 k=3

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

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

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

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

CROSSREFS

Sequence in context: A202750 A177823 A142462 * A173885 A173585 A022179

Adjacent sequences:  A203394 A203395 A203396 * A203398 A203399 A203400

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Jan 01 2012

STATUS

approved

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Last modified November 13 17:34 EST 2019. Contains 329106 sequences. (Running on oeis4.)