A263975 Number of (3+1)X(n+1) arrays of permutations of 0..n*4+3 with each element having index change (+-,+-) 0,2 1,1 or 1,0.

16, 1441, 86633, 2604481, 102742049, 4952396901, 224559467921, 9479627840080, 407499168253313, 17951972257163801, 787313274461726480, 34237567537967020880, 1490472641241784860976, 65073777514668815019417

Offset: 1

Author

R. H. Hardin, Oct 30 2015

Keywords

• nonn

Comments

Row 3 of A263973.

Examples

			Some solutions for n=3
..2..4..0..7....2..3..5..7....5..3..0..7....5..3..0..7....2..3..0..6
..1..8..3.11....6..0..1.10....8..1.10..2....6..2..1.10....1..7..9..5
.13.12..5..6...13..4..8.14....4.12..6.14....4.12.13.14...12..4..8.15
.14.15..9.10....9.15.12.11....9.15.11.13....8.15..9.11...14.10.11.13
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..92

Crossrefs

Cf. A263973.