A264288 Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having directed index change 0,0 0,1 1,0 or -1,-2.

1, 69, 556, 4484, 47492, 448821, 4227024, 40561798, 385401502, 3654429812, 34690006705, 329163589542, 3121764930650, 29603292090987, 280717647093650, 2661785027200918, 25238274365506684, 239298584328248763

Offset: 1

Author

R. H. Hardin, Nov 10 2015

Keywords

• nonn

Comments

Row 4 of A264285.

Examples

			Some solutions for n=4
..0..1..2..3..4....0..1..9..2..3....7..1..9..2..3....0..1..9..2..4
..5.13..6..7..9...12..6..7..8..4....0..5..6..8..4....5..6..7..3..8
.17.10.12..8.14....5.10.11.13.14...10.18.11.12.14...17.10.11.12.14
.15.11.16.18.19...15.23.16.17.19...22.15.16.13.19...22.23.16.13.19
.20.21.22.23.24...20.21.22.18.24...20.21.17.23.24...15.20.21.18.24
		

Links

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

Crossrefs

Cf. A264285.