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A268960 Number of length-(n+6) 0..n arrays with no repeated value equal to the previous repeated value, with new values introduced in sequential order. 1
15, 525, 6723, 58409, 426289, 2918103, 19899645, 139354433, 1014707218, 7708112426, 61057289906, 503473697674, 4313566395798, 38328567460364, 352618771825166, 3353663922642364, 32927374508631249, 333319732229912935 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Subdiagonal 6 of A268956.
LINKS
EXAMPLE
Some solutions for n=4
..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
..0. .2. .0. .2. .1. .2. .2. .2. .2. .2. .2. .1. .0. .0. .2. .1
..2. .3. .1. .2. .2. .1. .1. .2. .0. .0. .3. .2. .2. .2. .1. .0
..2. .2. .2. .3. .2. .0. .2. .3. .1. .1. .1. .0. .0. .3. .0. .2
..3. .3. .1. .3. .3. .3. .0. .0. .3. .2. .1. .1. .2. .1. .2. .0
..0. .1. .3. .0. .4. .2. .3. .2. .3. .3. .4. .2. .3. .0. .2. .2
..2. .3. .0. .3. .2. .2. .0. .0. .1. .4. .3. .1. .1. .1. .3. .2
..1. .3. .4. .4. .3. .0. .2. .2. .4. .4. .3. .2. .4. .1. .4. .3
..2. .0. .2. .3. .4. .2. .3. .4. .1. .1. .1. .2. .3. .0. .1. .1
CROSSREFS
Cf. A268956.
Sequence in context: A218235 A212739 A009068 * A157166 A074040 A002403
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 16 2016
STATUS
approved

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Last modified June 16 11:09 EDT 2024. Contains 373429 sequences. (Running on oeis4.)