OFFSET
1,2
COMMENTS
Column 4 of A271684.
EXAMPLE
Some solutions for n=4
.....0........6........0........0........0........0........6........0
....0.6......2.3......5.0......6.3......5.3......0.0......2.5......4.6
...5.2.5....0.4.5....5.1.6....5.3.1....4.2.6....5.6.6....6.1.5....5.1.3
..2.2.3.0..0.2.3.0..4.2.0.1..4.4.2.0..4.3.0.1..2.2.3.1..0.1.2.0..2.0.4.3
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