A264884 Number of (7+1)X(n+1) arrays of permutations of 0..n*8+7 with each element having directed index change 0,1 0,-1 -2,0 or 1,1.

5, 0, 295, 324, 103585, 1946752, 68488297, 1924357508, 50441933177, 1445554962912, 36992542484103, 1026445425096056, 26650424305406609, 720407685534768304, 18921801302926160029, 503810101426663743940

Offset: 1

Author

R. H. Hardin, Nov 27 2015

Keywords

• nonn

Comments

Row 7 of A264878.

Examples

			Some solutions for n=4
..1..2..3..4.14....1..2..3..4.14....1..2..3..4.14....1..2.12..4.14
..6..0..8..9.19....6..0.17..9.19....6..0..8..9.19...15..0.17..9..3
.11..5.13..7.24...20..5.13..7..8...11..5.13..7.24...20..5..6..7..8
.16.10.27.12.29...16.10.11.12.29...16.10.18.12.29...16.10.11.19.13
.21.15.32.17.18...30.15.23.24.18...30.15.32.17.34...21.22.32.24.18
.35.20.37.22.23...35.27.21.22.39...35.20.21.22.23...35.27.37.29.23
.31.25.26.34.28...31.25.26.34.28...31.25.26.27.28...31.25.26.34.28
.36.30.38.39.33...36.37.38.32.33...36.37.38.39.33...36.30.38.39.33
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..69

Crossrefs

Cf. A264878.