A264652 Number of (n+1)X(5+1) arrays of permutations of 0..n*6+5 with each element having directed index change 1,1 2,2 -1,0 or 0,-1.

1, 18, 65, 716, 6656, 48781, 406871, 3133028, 24130345, 189393503, 1456102356, 11283273044, 87512383136, 676031229928, 5235900900831, 40524897463300, 313511622285272, 2426841120623568, 18779980614275382, 145331206525091820

Offset

1,2

Comments

Column 5 of A264655.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=4
..6..2..8..9..5.11....6..2..8..9..5.11....6..2..8..9..5.11....1..2..8..9..5.11
..7..0.14.10.16..4....7..0..1.10..3..4...12..0..1.15..3..4...12.13.14.10..3..4
.18.19.20..1.17..3...13.14.20.16.17.23...13.19..7.21.17.10...18.19..0.21.17.23
.24.12.13.22.23.29...24.12.26.27.15.29...24.20.26.14.23.16...24.20..6..7.15.16
.25.26.27.28.21.15...25.18.19.28.21.22...25.18.27.28.29.22...25.26.27.28.29.22

Crossrefs

Cf. A264655.

Sequence in context: A259634 A327836 A165029 * A010006 A237616 A044156

Adjacent sequences: A264649 A264650 A264651 * A264653 A264654 A264655

Keyword

nonn

Author

R. H. Hardin, Nov 20 2015

Status

approved