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A220342 T(n,k)=Equals two maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly two of their king-move neighbors in a random 0..3 nXk array 3
1, 1, 1, 2, 5, 2, 4, 24, 24, 4, 7, 89, 355, 89, 7, 12, 389, 3281, 3281, 389, 12, 21, 1570, 28993, 60003, 28993, 1570, 21, 37, 6413, 242224, 1022813, 1022813, 242224, 6413, 37, 65, 25744, 1973258, 16673578 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Table starts

..1....1......2.......4.......7.......12......21....37.65

..1....5.....24......89.....389.....1570....6413.25744

..2...24....355....3281...28993...242224.1973258

..4...89...3281...60003.1022813.16673578

..7..389..28993.1022813

.12.1570.242224

.21.6413

.37

LINKS

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

EXAMPLE

Some solutions for n=3 k=4

..0..1..1..0....0..0..0..0....0..0..1..1....0..0..0..1....1..1..1..0

..0..1..1..0....0..0..1..0....1..0..1..1....1..1..0..0....0..0..0..0

..0..1..1..1....0..0..1..1....1..1..1..1....1..1..0..1....1..1..0..1

CROSSREFS

Column 1 is A005251(n+1)

Sequence in context: A151871 A220247 A220319 * A221676 A073054 A010695

Adjacent sequences:  A220339 A220340 A220341 * A220343 A220344 A220345

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Dec 11 2012

STATUS

approved

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Last modified October 3 07:14 EDT 2022. Contains 357231 sequences. (Running on oeis4.)