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A269634 Number of length-n 0..n arrays with no repeated value differing from the previous repeated value by other than plus two or minus 1. 1
2, 9, 60, 567, 6876, 101999, 1789528, 36254755, 833022466, 21405491763, 608269658548, 18940014187981, 641288235101528, 23458631849042641, 921973961506659528, 38744802632600163683, 1733648542829648188818 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A269640.
LINKS
EXAMPLE
Some solutions for n=6
..2. .3. .6. .2. .3. .0. .4. .2. .3. .1. .2. .0. .2. .5. .6. .4
..6. .1. .2. .5. .4. .2. .0. .5. .0. .5. .5. .4. .1. .6. .1. .6
..6. .4. .6. .4. .4. .5. .5. .6. .4. .1. .4. .4. .6. .4. .6. .1
..1. .2. .1. .0. .2. .5. .4. .0. .3. .2. .2. .6. .3. .1. .6. .4
..4. .6. .3. .0. .6. .4. .5. .2. .4. .5. .3. .6. .5. .2. .2. .3
..1. .0. .2. .3. .6. .3. .3. .6. .6. .4. .3. .5. .4. .1. .4. .6
CROSSREFS
Cf. A269640.
Sequence in context: A306065 A166882 A268937 * A269530 A269672 A268205
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 02 2016
STATUS
approved

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Last modified June 14 05:27 EDT 2024. Contains 373393 sequences. (Running on oeis4.)