OFFSET
1,2
COMMENTS
Diagonal of A264628. Some solutions for n=4.
EXAMPLE
..1.11..7..4..9....1..2.12..4.14....5..2..3..4.14....1..2..3..4..9
..6..0.12..2..3...15..0.17..9..3...10..0..1..9.19...15..0.12.13.14
.20..5.13.14..8...20..5..6..7..8...15.12..6..7..8...20..5..6..7..8
.16.10.22.19.24...16.10.11.19.13...20.17.11.23.13...16.10.11.19.24
.21.15.23.17.18...21.22.23.24.18...21.22.16.24.18...21.22.23.17.18
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 19 2015
STATUS
approved