|
%I #4 Nov 10 2015 14:51:21
%S 1,10,132,4484,537057,157344756,126311779972,290106175842629,
%T 1813081182779342345
%N Number of (n+1)X(n+1) arrays of permutations of 0..(n+1)^2-1 with each element having directed index change 0,0 0,1 1,0 or -1,-2.
%C Diagonal of A264285.
%e Some solutions for n=4
%e ..0..1..9..2..3....7..0..9..2..4....7..1..9..2..4....7..0..1..2..4
%e ..5.13..6..7..4....5..1..6..3..8....0..5..6..3..8....5..6.14..3..8
%e .10.11.12..8.14...17.11.19.12.13...17.10.11.13.14...10.18.11.13..9
%e .15.23.17.18.19...10.16.24.18.14...22.15.12.18.19...15.16.12.17.19
%e .20.16.21.22.24...15.20.21.22.23...20.16.21.23.24...20.21.22.23.24
%Y Cf. A264285.
%K nonn
%O 1,2
%A _R. H. Hardin_, Nov 10 2015
| 