A264674 Number of (n+1)X(6+1) arrays of permutations of 0..n*7+6 with each element having directed index change -1,-1 1,0 -1,-2 -2,-2 or 0,1.

3, 201, 3698, 88687, 2025372, 43095017, 918298857, 19297801298, 404856272120, 8489260394876, 177705197746797, 3719732870934290, 77850133987381370, 1629084572098790038, 34089792233147972596, 713335964676746507000

Offset: 1

Author

R. H. Hardin, Nov 20 2015

Keywords

• nonn

Comments

Column 6 of A264676.

Examples

			Some solutions for n=4
..8..9..1..2.13..4..5....8.17..1.12..3..4..5....9..0..1..2.13..4..5
..0.16.25..3.10.11..6....0..7..2..9.19.20..6...16.17..8..3.10.11..6
..7.23.24.26.17.12.19...22.14.24.10.11.18.13....7.31.24.26.27.12.19
.14.15.22.33.18.34.20...29.15.16.33.34.25.26...14.15.22.23.18.34.20
.21.28.29.30.31.32.27...21.28.23.30.31.32.27...21.28.29.30.25.32.33
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210

Crossrefs

Cf. A264676.