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A188963 Number of nX2 array permutations with each element moved and moved by a city block distance of no more than three 1
1, 9, 265, 8132, 154564, 2790864, 55327556, 1139362932, 23084210737, 461656617041, 9241940662537, 185683704600857, 3732662042406464, 74976134234530448, 1505525933241030176, 30234928280320748560 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 2 of A188966

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

EXAMPLE

Some solutions for 3X2

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

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

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

CROSSREFS

Sequence in context: A177393 A081059 A202884 * A306535 A144684 A191960

Adjacent sequences:  A188960 A188961 A188962 * A188964 A188965 A188966

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 14 2011

STATUS

approved

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Last modified August 12 10:16 EDT 2022. Contains 356069 sequences. (Running on oeis4.)