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 A221929 T(n,k)=Number of nXk arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor, without move-in move-out straight through or left turns 7
 1, 3, 1, 6, 25, 1, 13, 232, 184, 1, 28, 2197, 5748, 1367, 1, 60, 20933, 201378, 153652, 10179, 1, 129, 198589, 6888458, 20246283, 4053833, 75782, 1, 277, 1885324, 236114556, 2568601026, 2007184132, 107220027, 564169, 1, 595, 17896442 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Table starts .1.......3..........6...........13...........28...........60............129 .1......25........232.........2197........20933.......198589........1885324 .1.....184.......5748.......201378......6888458....236114556.....8089630790 .1....1367.....153652.....20246283...2568601026.326363935235.41397744561659 .1...10179....4053833...2007184132.938516646422 .1...75782..107220027.199492714651 .1..564169.2834169558 .1.4200043 .1 LINKS R. H. Hardin, Table of n, a(n) for n = 1..49 EXAMPLE Some solutions for n=3 k=4 ..0..2..2..2....0..1..1..0....0..1..0..1....2..0..0..1....0..1..2..0 ..1..1..2..0....1..1..3..1....0..2..0..2....0..4..3..0....0..1..4..0 ..1..0..0..1....0..3..0..1....2..2..0..2....0..0..2..0....0..2..0..2 CROSSREFS Column 2 is A221777 Row 1 is A002478 Sequence in context: A271969 A175291 A156363 * A283432 A157866 A221852 Adjacent sequences:  A221926 A221927 A221928 * A221930 A221931 A221932 KEYWORD nonn,tabl AUTHOR R. H. Hardin Feb 01 2013 STATUS approved

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Last modified November 24 04:49 EST 2020. Contains 338607 sequences. (Running on oeis4.)