A269634 - OEIS

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.

2, 9, 60, 567, 6876, 101999, 1789528, 36254755, 833022466, 21405491763, 608269658548, 18940014187981, 641288235101528, 23458631849042641, 921973961506659528, 38744802632600163683, 1733648542829648188818

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OFFSET

1,1

COMMENTS

Diagonal of A269640.

LINKS

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

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

Adjacent sequences: A269631 A269632 A269633 * A269635 A269636 A269637

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 02 2016

STATUS

approved