A268959 Number of length-(n+5) 0..n arrays with no repeated value equal to the previous repeated value, with new values introduced in sequential order.

11, 201, 1830, 12634, 78930, 485726, 3068890, 20245176, 140084705, 1016152035, 7710817964, 61062125594, 503482001606, 4313580168256, 38328589616502, 352618806519480, 3353663975679253, 32927374587977757, 333319732346331654

Offset

1,1

Comments

Subdiagonal 5 of A268956.

Links

R. H. Hardin, Table of n, a(n) for n = 1..117

Example

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

Crossrefs

Cf. A268956.

Sequence in context: A088295 A305316 A352842 * A213531 A064748 A191556

Adjacent sequences: A268956 A268957 A268958 * A268960 A268961 A268962

Keyword

nonn

Author

R. H. Hardin, Feb 16 2016

Status

approved