A211845 Number of nonnegative integer arrays of length n+9 with new values 0 upwards introduced in order, no three adjacent elements all unequal, and containing the value 5

1, 11, 82, 494, 2619, 12713, 57913, 251481, 1052383, 4277451, 16986189, 66202629, 254144210, 963755936, 3618833405, 13481785125, 49915401836, 183932105682, 675399816338, 2474127510634, 9050295230250, 33087054691466, 120988345056414

Offset

1,2

Comments

Column 4 of A211849

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
..1....1....1....1....0....1....1....1....1....1....1....1....1....1....1....1
..2....2....2....2....0....2....2....1....2....1....2....1....2....2....2....2
..2....2....1....1....2....2....2....2....1....2....2....2....2....2....2....1
..3....3....1....1....2....3....3....2....1....2....3....2....3....3....3....1
..3....3....3....3....3....3....3....3....3....3....2....2....3....2....3....3
..4....3....1....3....3....4....4....3....3....2....3....3....4....2....4....3
..4....4....1....4....4....4....4....4....4....2....3....3....4....4....4....4
..5....3....4....4....4....0....5....3....3....4....4....4....1....4....5....4
..5....3....4....5....5....0....5....3....3....4....4....4....1....4....4....5
..2....5....5....4....5....5....1....5....5....5....5....5....5....5....4....5

Crossrefs

Sequence in context: A239459 A197643 A261391 * A029887 A026871 A123367

Adjacent sequences: A211842 A211843 A211844 * A211846 A211847 A211848

Keyword

nonn

Author

R. H. Hardin Apr 22 2012

Status

approved