|
%I #3 Jan 13 2016 09:14:35
%S 1,35,24,135,1223,18140,413155,14116549,711260225
%N Number of nX(n+2) arrays of permutations of n+2 copies of 0..n-1 with every element equal to or 1 greater than any north, west or southwest neighbors modulo n and the upper left element equal to 0.
%C Superdiagonal 2 of A267338.
%e Some solutions for n=4
%e ..0..1..2..3..3..0....0..1..2..3..0..0....0..1..1..2..3..3....0..0..1..1..2..3
%e ..1..1..2..3..0..0....1..2..3..3..0..1....1..1..2..3..3..0....0..0..1..2..3..3
%e ..1..2..2..3..0..1....1..2..3..0..1..2....1..2..2..3..0..0....0..1..2..2..3..3
%e ..2..2..3..3..0..1....2..3..0..1..2..3....1..2..2..3..0..0....1..1..2..2..3..0
%Y Cf. A267338.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jan 13 2016
| 