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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 (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. A247682.

Sequence in context: A215191 A063788 A066854 * A059138 A117735 A041624

Adjacent sequences:  A247898 A247899 A247900 * A247902 A247903 A247904

KEYWORD

nonn,easy

AUTHOR

Odimar Fabeny, Sep 26 2014

STATUS

approved

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Last modified January 28 06:59 EST 2021. Contains 340490 sequences. (Running on oeis4.)