A264588 Number of (5+1)X(n+1) arrays of permutations of 0..n*6+5 with each element having directed index change 1,0 0,-1 1,2 or -1,1.

1, 16, 25, 505, 3668, 30718, 366292, 2509523, 26091488, 234351923, 1992122611, 19022851600, 163598409399, 1504760262107, 13600577455859, 120731359424594, 1101615290572263, 9840525557651890, 88782728901771783, 800828577200616792

Offset

1,2

Comments

Row 5 of A264583.

Links

R. H. Hardin, Table of n, a(n) for n = 1..171

Example

Some solutions for n=4
..1..2..3..4..8....1..2..3..4..8....1..2..3..4..8....1..5..3..4..8
..0..7.11.12.13....0..7.11..9.13....6..7..0..9.13....6.10..0..9..2
..5..6.16.14..9....5..6.16.14.18...11.12..5.17.18...11.12.13.14..7
.10.20.18.19.23...10.20.12.22.23...16.20.10.19.14...16.17.21.22.23
.15.25.17.27.28...15.25.17.27.19...15.25.23.27.28...15.25.26.18.19
.26.21.22.29.24...26.21.28.29.24...26.21.22.29.24...20.27.28.29.24

Crossrefs

Cf. A264583.

Sequence in context: A166672 A167358 A267764 * A291093 A291966 A171144

Adjacent sequences: A264585 A264586 A264587 * A264589 A264590 A264591

Keyword

nonn

Author

R. H. Hardin, Nov 18 2015

Status

approved