A264522 Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 with each element having directed index change -1,0 0,2 -1,-2 or 1,0.

0, 0, 36, 228, 1444, 8018, 44521, 258264, 1498176, 8784648, 51509329, 298721094, 1732390884, 10048882704, 58289410624, 338365016544, 1964179826064, 11397166993164, 66132140115889, 383699043436626, 2226223976362884

Offset: 1

Author

R. H. Hardin, Nov 16 2015

Keywords

• nonn

Comments

Row 4 of A264520.

Examples

			Some solutions for n=4
..7..6..0..1..9....7..8..9..1..2....7..6..9..8..2....5..6..9..1..2
.12.11..2..3..4....0.13.14..3..4....0..1.14..3..4....0.11.12..3..4
..5.18.10..8.19....5..6.19.11.12....5.18.10.11.12...17.18..7..8.19
.20.23.24.13.14...10.21.24.23.17...20.23.22.13.24...10.23.24.13.14
.15.16.17.21.22...15.16.20.18.22...15.16.17.21.19...15.16.20.21.22
		

Links

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

Crossrefs

Cf. A264520.