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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

All terms have digital root equal to 9.

LINKS

Odimar Fabeny, Table of n, a(n) for n = 1..10000

CROSSREFS

Cf. A247683.

Sequence in context: A058631 A078293 A247899 * A052999 A050662 A236180

Adjacent sequences: A247899 A247900 A247901 * A247903 A247904 A247905

KEYWORD

nonn,easy

AUTHOR

Odimar Fabeny, Sep 26 2014

STATUS

approved

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Last modified January 29 08:01 EST 2023. Contains 359915 sequences. (Running on oeis4.)