A264589 Number of (6+1)X(n+1) arrays of permutations of 0..n*7+6 with each element having directed index change 1,0 0,-1 1,2 or -1,1.

0, 32, 68, 2144, 24370, 314166, 5469993, 64600334, 955403058, 13661638720, 185175540228, 2656056376960, 36969206131784, 519570569882576, 7317721679276528, 102400168976291216, 1439810847531011376

Offset

1,2

Comments

Row 6 of A264583.

Links

R. H. Hardin, Table of n, a(n) for n = 1..49

Example

Some solutions for n=4
..1..5..3..4..8....1..5..3..4..8....1..5..3..7..8....1..5..6..4..8
..0..7..2.12.13....0..7..2..9.13....0.10..2.12..4....0.10..2..3.13
.11..6.16.14..9...11.12.16..6.18...11..6.13.14..9...11.12..7.14..9
.10.20.18.19.23...10.20.21.19.14...16.17.18.22.23...16.17.18.19.23
.15.22.17.27.28...15.25.17.27.28...15.25.26.24.19...21.25.15.24.28
.26.30.31.21.24...26.30.22.23.24...20.30.28.21.33...26.30.20.29.22
.25.32.33.34.29...31.32.33.34.29...31.32.27.34.29...31.32.33.34.27

Crossrefs

Cf. A264583.

Sequence in context: A044515 A234875 A153981 * A100017 A135110 A228665

Adjacent sequences: A264586 A264587 A264588 * A264590 A264591 A264592

Keyword

nonn

Author

R. H. Hardin, Nov 18 2015

Status

approved