A264305 Number of (6+1)X(n+1) arrays of permutations of 0..n*7+6 with each element having directed index change 0,1 0,-2 1,0 or -1,0.

0, 441, 4352, 94320, 3654505, 66462504, 1659712320, 45752436553, 1014943340640, 25160568710560, 635057168205273, 15056010708049352, 370239981042453456, 9120915650958923337, 220779580837062915520, 5407745104882678660128

Offset

1,2

Comments

Row 6 of A264299.

Links

Table of n, a(n) for n=1..16.

Example

Some solutions for n=4
..5..0..7..2..9....2..3..7..8..9....5..0..4..8..3....5..0..4..2..9
.10..1..6..3..4....0..1..6.13..4...10..1..2..7.14....7..1..6..3.14
.15.16.11..8.13....5.10.14.12.19...12..6.11.18..9...12.10.11..8.19
.17.21.12.23.14...20.11.16.17.24...20.21.16.13.24...20.21.22.13.24
.22.20.27.18.19...15.26.21.18.29...15.23.17.22.19...15.16.17.18.29
.30.31.32.33.24...27.28.22.23.34...30.25.29.27.34...27.28.26.23.34
.25.26.34.28.29...25.30.31.32.33...32.26.31.28.33...25.30.31.32.33

Crossrefs

Cf. A264299.

Sequence in context: A250808 A202400 A014793 * A321337 A206467 A264262

Adjacent sequences: A264302 A264303 A264304 * A264306 A264307 A264308

Keyword

nonn

Author

R. H. Hardin, Nov 11 2015

Status

approved