A264346 Number of (6+1)X(n+1) arrays of permutations of 0..n*7+6 with each element having index change +-(.,.) 0,0 0,1 or 1,2.

128, 17711, 4900000, 549201567, 98684484373, 15386771913704, 2616784941180034, 423590351890979093, 70720633596543340140, 11667647323281661702544, 1939303748261775631813520, 321550922297722913366223227

Offset: 1

Author

R. H. Hardin, Nov 11 2015

Keywords

• nonn

Comments

Row 6 of A264341.

Examples

			Some solutions for n=2
..5..2..1....0..1..2....5..2..1....0..2..1....5..2..1....0..1..2....5..1..2
..3..4..0....8..5..4....3..4..0....8..5..4....8..4..0....4..3..5....4..3..0
..7..6..8....7..6..3...11..7..8....7..6..3....7..6..3....6..7..8...11..7..8
.10..9.11...10..9.11...10..9..6....9.10.11....9.11.10...14.10.11...10..9..6
.17.14.13...13.12.14...12.13.14...12.14.13...12.14.13...17.13..9...12.14.13
.15.16.12...20.17.16...20.17.16...16.15.17...20.17.16...16.15.12...15.17.16
.18.19.20...19.18.15...19.18.15...19.18.20...19.18.15...18.20.19...19.18.20
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..123

Crossrefs

Cf. A264341.