A202663 Number of -7..7 arrays of n elements with first through fourth differences also in -7..7.

15, 169, 1483, 9739, 47713, 238453, 1186107, 5914721, 29498237, 147102833, 733637717, 3658966867, 18248551605, 91011704581, 453908063159, 2263802495143, 11290385910711, 56309167233261, 280833879734153, 1400618531203889

Offset: 1

Author

R. H. Hardin, Dec 22 2011

Keywords

• nonn

Comments

Column 7 of A202664.

Examples

			Some solutions for n=5
..7...-2...-5...-4...-3....0....7....0...-5....6....1....0...-2...-1....5....5
..5....0...-3...-4....2....3....3...-4....0....3....1...-3...-5...-4...-1....7
..7....0....2...-2....1....1....3...-1....0....0....1...-3...-6...-6...-6....4
..7....2....5...-3...-1...-2....4....3...-3...-2....0...-3...-5...-4...-7....1
..6....5....6...-5...-3...-2....0....7...-4....3...-6....1...-6....2...-5....5
		

Links

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

Crossrefs

Cf. A202664.