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A250935 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with no 2X2 subblock having a diagonal absolute difference less than its antidiagonal absolute difference 8
164, 1652, 1652, 16588, 42776, 16588, 166600, 1104364, 1104364, 166600, 1673388, 28564788, 73855420, 28564788, 1673388, 16808096, 739019204, 4951389320, 4951389320, 739019204, 16808096, 168826024, 19118642332, 332020435016 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

......164........1652..........16588............166600..............1673388

.....1652.......42776........1104364..........28564788............739019204

....16588.....1104364.......73855420........4951389320.........332020435016

...166600....28564788.....4951389320......861990961500......150150624833184

..1673388...739019204...332020435016...150150624833184....68000055264949776

.16808096.19118642332.22261912983384.26155302062776044.30803789209655858532

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..112

FORMULA

Empirical for column k:

k=1: a(n) = 12*a(n-1) -23*a(n-2) +37*a(n-3) -33*a(n-4)

k=2: [order 16]

k=3: [order 64]

EXAMPLE

Some solutions for n=2 k=4

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

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

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

CROSSREFS

Sequence in context: A251197 A038670 A192993 * A250928 A205314 A229377

Adjacent sequences:  A250932 A250933 A250934 * A250936 A250937 A250938

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Nov 28 2014

STATUS

approved

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Last modified October 15 07:56 EDT 2019. Contains 328026 sequences. (Running on oeis4.)