A211696 Number of nonnegative integer arrays of length n+2*4-2 with new values introduced in order 0 upwards and every value appearing only in runs of at least 4.

1, 2, 3, 4, 5, 8, 13, 20, 29, 45, 73, 118, 185, 294, 480, 793, 1298, 2127, 3531, 5932, 9975, 16783, 28415, 48527, 83236, 143064, 246839, 428430, 747193, 1307145, 2294023, 4043525, 7158170, 12715501, 22656789, 40512977, 72713331, 130948115, 236535554

Offset: 1

Author

R. H. Hardin, Apr 19 2012

Keywords

• nonn

Comments

Column 4 of A211700.

Examples

			All solutions for n=5
..0....0....0....0....0
..0....0....0....0....0
..0....0....0....0....0
..0....0....0....0....0
..0....0....0....0....1
..1....0....0....0....1
..1....0....1....0....1
..1....1....1....0....1
..1....1....1....0....1
..1....1....1....0....1
..1....1....1....0....1
		

Links

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

Crossrefs

Cf. A211700.