A264512 Number of (6+1)X(n+1) arrays of permutations of 0..n*7+6 with each element having directed index change -1,1 0,-1 0,1 or 1,0.

9, 32, 1790, 41622, 1041411, 26941396, 655642859, 16421827254, 402239227318, 9892351915112, 241875211328987, 5905726801768670, 143942038344689945, 3503368104963586176, 85196901831680746105, 2070150565238741962034

Offset

1,1

Comments

Row 6 of A264506.

Links

R. H. Hardin, Table of n, a(n) for n = 1..206

Example

Some solutions for n=4
..1..0..3..2..8....1..0..3..2..8....1..2..6..4..3....1..2..3..4..8
..6.10.11..9..4....6..7.11.12..4....0.10.11..7..8....0..5..6.12.13
..5.12..7.14.13....5.15.13.14..9....5.15.13.14..9...11.10..7.14..9
.16.17.21.22.18...10.20.18.19.23...16.20.12.17.18...16.15.18.22.23
.15.25.23.24.19...21.16.17.27.28...21.22.23.24.19...21.20.17.24.19
.20.30.26.29.28...26.30.22.29.24...26.30.31.27.28...26.25.28.32.33
.31.32.27.34.33...25.32.31.34.33...25.32.33.34.29...31.30.27.34.29

Crossrefs

Cf. A264506.

Sequence in context: A196016 A183426 A061913 * A231764 A208136 A130444

Adjacent sequences: A264509 A264510 A264511 * A264513 A264514 A264515

Keyword

nonn

Author

R. H. Hardin, Nov 15 2015

Status

approved