A264171 Number of (n+1)X(6+1) arrays of permutations of 0..n*7+6 with each element having directed index change 0,0 0,1 1,0 -2,-1 or -1,-2.

69, 8007, 408698, 23916656, 1432853288, 83609564805, 4868342507373, 283367589816531, 16469467179397573, 956260182816301823, 55484547617668226346, 3218321886243655288008, 186643918339019352805709

Offset: 1

Author

R. H. Hardin, Nov 06 2015

Keywords

• nonn

Comments

Column 6 of A264172.

Examples

			Some solutions for n=2
.15.10.11..2..3.20..6....0..1..2..3..4.20..5...15..0..1.18..4..5..6
..0..1..8..9..4..5.13...16..7..9.10.11.12..6...16..7..2..3.20.11.13
..7.14.16.17.18.12.19...14..8.15.17.18.19.13...14..8..9.10.17.12.19
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..27

Crossrefs

Cf. A264172.