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A269600
Number of length-n 0..n arrays with no repeated value differing from the previous repeated value by one or less.
1
2, 9, 60, 572, 7030, 105892, 1886252, 38768412, 902743646, 23482784400, 674804472216, 21227322458468, 725465523386294, 26765145874993234, 1060182321437102136, 44874027105660248520, 2021234030434596074938
OFFSET
1,1
COMMENTS
Diagonal of A269606.
LINKS
EXAMPLE
Some solutions for n=6
..3. .2. .5. .1. .1. .3. .3. .1. .0. .6. .4. .5. .2. .3. .6. .4
..4. .2. .6. .2. .4. .5. .5. .5. .3. .4. .2. .6. .3. .5. .0. .2
..6. .0. .5. .0. .0. .6. .6. .4. .0. .2. .0. .2. .4. .1. .6. .0
..3. .0. .6. .1. .4. .5. .3. .1. .1. .5. .0. .3. .2. .4. .6. .5
..4. .3. .6. .6. .5. .3. .1. .3. .0. .0. .3. .5. .0. .6. .4. .3
..1. .0. .3. .2. .4. .1. .5. .5. .3. .6. .3. .0. .1. .4. .1. .2
CROSSREFS
Cf. A269606.
Sequence in context: A269530 A269672 A268205 * A269460 A207649 A289713
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 01 2016
STATUS
approved