A264242 Number of (n+1)X(6+1) arrays of permutations of 0..n*7+6 with each element having directed index change 0,0 1,1 0,-1 -1,1 or 0,-2.

460, 18725, 1249237, 70618408, 4157973485, 240749059561, 13986284450284, 810930428170425, 47028506583536421, 2726616972676156520, 158083357026166112653, 9164964468822776929689, 531340576206742265022860

Offset

1,1

Comments

Column 6 of A264244.

Links

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

Example

Some solutions for n=2
..0..2..4..9.10..5..6....1..7..8..3..4..6.12....1..3..2..9..6..5.12
..7..8..1.16..3.13.19....9..0.10..2.13.18..5....8..0.15.16.11..4.13
.14.15.17.18.20.11.12...14.15.16.17.19.11.20...14..7.18.17.10.19.20

Crossrefs

Cf. A264244.

Sequence in context: A048923 A329292 A252535 * A358894 A107973 A227994

Adjacent sequences: A264239 A264240 A264241 * A264243 A264244 A264245

Keyword

nonn

Author

R. H. Hardin, Nov 09 2015

Status

approved