A264547 Number of (n+1)X(5+1) arrays of permutations of 0..n*6+5 with each element having directed index change -1,1 -1,2 1,0 or 0,-1.

1, 40, 172, 1528, 14852, 105081, 813473, 6587227, 50597392, 392445418, 3079324224, 23951405053, 186390329980, 1454120420684, 11328848497754, 88249763622117, 687788460643528, 5359344090882789, 41758209474358230, 325395419357215040

Offset: 1

Author

R. H. Hardin, Nov 17 2015

Keywords

• nonn

Comments

Column 5 of A264550.

Examples

			Some solutions for n=4
..1..2..3..4..8.10....1..2..3..4..9.10....1..6..7..4..5.10....1..6..7..4..9.10
..0.12.13.14.15..5....0..8.13.14.11..5....0.12..2..3.15.16....0..8..2..3.11..5
..6..7.18..9.17.11....6..7.15.20.21.22...13.18..8..9.21.11...13.14.18.19.21.22
.19.24.21.22.16.27...12.24.25.26.16.17...19.24.14.22.27.17...12.20.24.15.16.17
.25.26.20.28.29.23...18.19.27.28.29.23...25.26.20.28.29.23...25.26.27.28.29.23
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical recurrence of order 84

Crossrefs

Cf. A264550.

Formula

Empirical recurrence of order 84 (see link above)