OFFSET
1,2
COMMENTS
Column 6 of A271969.
EXAMPLE
Some solutions for n=4
.....0........0........0........5........6........0........0........5
....0.0......0.0......5.0......4.1......0.1......4.3......0.0......4.1
...0.5.6....5.5.3....2.5.5....0.0.6....5.0.5....5.3.5....0.0.5....5.5.6
..0.4.1.1..2.4.4.1..0.2.4.1..4.3.2.3..2.0.2.0..4.2.4.1..4.3.2.0..2.4.1.1
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 17 2016
STATUS
approved