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A247902
First differences of A247683
1
90, 18, 36, 18, 18, 54, 36, 90, 18, 72, 18, 18, 18, 36, 18, 54, 18, 90, 18, 18, 18, 18, 18, 36, 18, 36, 18, 18, 18, 36, 90, 36, 18, 18, 18, 72, 18, 54, 18, 18, 18, 18, 54, 36, 18, 18, 18, 18, 18, 54, 36, 36, 18, 36, 36, 18, 18, 54, 18, 54, 36, 18, 18, 18, 18, 18, 54, 18, 18, 72, 18, 54, 36, 36, 18, 36, 36, 18, 18, 18, 18
OFFSET
1,1
COMMENTS
All terms have digital root equal to 9.
LINKS
CROSSREFS
Cf. A247683.
Sequence in context: A058631 A078293 A247899 * A052999 A050662 A236180
KEYWORD
nonn,easy
AUTHOR
Odimar Fabeny, Sep 26 2014
STATUS
approved