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A247901
First differences of A247682
1
18, 90, 18, 18, 54, 54, 36, 72, 18, 18, 54, 18, 36, 54, 36, 18, 18, 18, 54, 36, 18, 18, 18, 36, 18, 36, 36, 72, 18, 36, 18, 18, 18, 36, 36, 18, 72, 18, 36, 54, 18, 54, 18, 54, 36, 18, 18, 18, 36, 36, 18, 36, 36, 18, 36, 72, 18, 36, 36, 18, 18, 54, 18, 18, 18, 18, 36, 36, 36, 18, 18, 72, 18, 18, 18, 18, 18, 36, 36, 18, 36
OFFSET
1,1
COMMENTS
All terms have digital root equal to 9.
LINKS
CROSSREFS
Cf. A247682.
Sequence in context: A215191 A063788 A066854 * A369419 A059138 A117735
KEYWORD
nonn,easy
AUTHOR
Odimar Fabeny, Sep 26 2014
STATUS
approved