A211846 Number of nonnegative integer arrays of length n+11 with new values 0 upwards introduced in order, no three adjacent elements all unequal, and containing the value 6

1, 13, 113, 785, 4755, 26163, 134164, 651814, 3035018, 13657458, 59769854, 255628486, 1072565093, 4428689165, 18041493575, 72667375995, 289905733805, 1147339718965, 4510476836460, 17634066423470, 68632042506612

Offset

1,2

Comments

Column 5 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....0....1....1....0
..1....1....1....1....1....1....1....1....1....1....1....1....1....0....1....1
..2....2....2....2....2....2....2....2....2....2....2....2....1....0....2....1
..2....1....2....2....2....2....2....2....2....2....2....2....2....2....2....2
..3....1....3....3....3....3....3....2....1....3....3....3....2....2....3....2
..3....3....3....3....3....3....2....3....1....3....3....3....2....3....3....3
..4....3....4....4....4....4....2....3....3....4....2....3....3....3....3....2
..4....4....3....4....4....4....4....3....3....4....2....4....3....4....4....2
..5....4....3....5....5....3....4....4....4....4....4....4....4....4....4....4
..5....4....5....5....4....3....4....4....4....5....4....5....4....5....5....4
..6....5....5....6....4....5....5....5....5....5....5....4....5....5....5....5
..6....5....5....5....4....5....5....5....5....6....5....4....5....6....6....5
..3....6....6....6....6....6....6....6....6....6....6....6....6....5....5....6

Crossrefs

Sequence in context: A244763 A320463 A182022 * A196862 A021076 A125376

Adjacent sequences: A211843 A211844 A211845 * A211847 A211848 A211849

Keyword

nonn

Author

R. H. Hardin Apr 22 2012

Status

approved