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A222779 T(n,k)=Number of nXk 0..6 arrays with no element equal to another at a city block distance of exactly two, and new values 0..6 introduced in row major order 4
1, 2, 2, 3, 7, 3, 7, 34, 34, 7, 20, 388, 969, 388, 20, 67, 6814, 64752, 64752, 6814, 67, 255, 148168, 5227536, 17510800, 5227536, 148168, 255, 1079, 3518434, 436214328, 4929510472, 4929510472, 436214328, 3518434, 1079, 4987, 86343148, 36601614264 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Table starts

....1........2...........3.............7............20............67

....2........7..........34...........388..........6814........148168

....3.......34.........969.........64752.......5227536.....436214328

....7......388.......64752......17510800....4929510472.1392230785552

...20.....6814.....5227536....4929510472.4681590376584

...67...148168...436214328.1392230785552

..255..3518434.36601614264

.1079.86343148

.4987

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..49

EXAMPLE

Some solutions for n=3 k=4

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

..2..2..3..4....2..3..1..4....4..1..5..3....2..3..4..2....4..5..5..4

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

CROSSREFS

Sequence in context: A222838 A222944 A222871 * A222894 A210753 A208762

Adjacent sequences:  A222776 A222777 A222778 * A222780 A222781 A222782

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Mar 05 2013

STATUS

approved

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Last modified September 28 17:45 EDT 2022. Contains 357080 sequences. (Running on oeis4.)