A202122 Number of -6..6 arrays of n elements with first, second and third differences also in -6..6.

13, 127, 967, 5509, 32267, 188505, 1104357, 6471075, 37917347, 222179581, 1301902689, 7628745319, 44701958081, 261938834035, 1534876473727, 8993877595975, 52701197650513, 308811879264259, 1809537203539017

Offset: 1

Author

R. H. Hardin Dec 11 2011

Keywords

• nonn

Comments

Column 6 of A202124

Examples

			Some solutions for n=5
.-4...-3....0...-3....0...-5....4...-1...-1...-5....3....2...-4...-6....3....1
.-1...-5...-5....1....4...-6...-2....2...-4...-1...-3....5...-3...-6....4....2
..2...-5...-6....5....2...-3...-3....4...-2....2...-5....2...-4...-1....2....0
..4...-5...-4....5...-2...-1...-4....4....1....3...-1...-1...-2....4....0...-2
..3....0...-2....2...-4....5...-3....5....2....1....3...-4....1....5...-6...-5
		

Links

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