A211833 Number of nonnegative integer arrays of length n+6 with new values 0 upwards introduced in order, no three adjacent elements equal, and containing the value 6

1, 29, 492, 6451, 72840, 748964, 7251376, 67580793, 615822272, 5551364270, 49959824673, 452156869885, 4139616347242, 38518992801743, 365611443752993, 3549527237384513, 35313240436847311, 360427223956197579

Offset

1,2

Comments

Column 5 of A211836

Links

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

Example

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

Crossrefs

Sequence in context: A173986 A258462 A320550 * A022753 A225969 A211560

Adjacent sequences: A211830 A211831 A211832 * A211834 A211835 A211836

Keyword

nonn

Author

R. H. Hardin Apr 21 2012

Status

approved