A268326 Number of length-(n+1) 0..7 arrays with new values introduced in sequential order, and with new repeated values introduced in sequential order, both starting with zero.

2, 4, 11, 33, 114, 435, 1829, 8376, 41466, 220115, 1242614, 7395663, 45999012, 296480813, 1965371333, 13314182333, 91697130971, 639451012407, 4501167824269, 31908164747227, 227399949031725, 1627202389749190, 11680282747792917

Offset

1,1

Comments

Column 7 of A268327.

Links

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

R. H. Hardin, Empirical recurrence of order 54

Formula

Empirical recurrence of order 54 (see link above)

Example

Some solutions for n=9
..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0
..1....1....1....1....1....0....1....1....1....1....1....1....0....1....1....0
..2....0....2....0....2....1....2....0....2....2....2....0....1....2....0....1
..3....1....1....1....3....1....3....0....1....1....3....0....2....3....2....0
..4....2....3....2....4....0....1....1....0....3....1....0....3....1....3....2
..5....3....1....3....2....2....2....1....3....4....3....0....2....2....2....0
..1....0....4....2....1....3....4....2....0....0....0....2....4....1....4....2
..4....2....1....4....0....4....2....3....3....5....4....0....3....4....2....1
..5....0....5....0....0....1....3....4....2....3....1....3....5....5....1....0
..6....4....4....5....1....5....0....2....3....1....3....4....3....4....2....3

Crossrefs

Cf. A268327.

Sequence in context: A268323 A268324 A268325 * A268320 A127782 A002846

Adjacent sequences: A268323 A268324 A268325 * A268327 A268328 A268329

Keyword

nonn

Author

R. H. Hardin, Feb 01 2016

Status

approved