A221684 Number of 0..n arrays of length 5 with each element differing from at least one neighbor by 1 or less, starting with 0.

16, 40, 68, 100, 133, 166, 199, 232, 265, 298, 331, 364, 397, 430, 463, 496, 529, 562, 595, 628, 661, 694, 727, 760, 793, 826, 859, 892, 925, 958, 991, 1024, 1057, 1090, 1123, 1156, 1189, 1222, 1255, 1288, 1321, 1354, 1387, 1420, 1453, 1486, 1519, 1552, 1585

Offset: 1

Author

R. H. Hardin Jan 22 2013

Keywords

• nonn

Comments

Row 5 of A221683

Examples

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

Links

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

Formula

Empirical: a(n) = 33*n - 32 for n>3