A271679 - OEIS

A271679

Number of ways to move elements of an nXnXn triangular array to themselves or a neighbor, with no more than 3-1 elements moved to themselves.

1, 5, 43, 1060, 52748, 7094704, 2145306564, 1620658809592, 2911303191478512, 12781455928074495792

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Column 3 of A271684.

LINKS

EXAMPLE

Some solutions for n=4

.....0........6........5........5........0........5........5........6

....6.3......0.1......4.1......2.5......4.3......2.5......2.0......2.5

...5.5.1....5.5.6....6.0.6....5.5.1....5.5.0....5.2.5....0.4.6....2.4.5

..2.4.2.0..2.2.2.3..2.3.2.3..2.4.4.1..2.2.4.3..4.1.4.1..4.3.1.3..0.1.3.0

Element moves: 0=itself 1=nw 2=ne 3=w 4=e 5=sw 6=se, reciprocals total 7

CROSSREFS

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 12 2016

STATUS

approved