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A179659 Digital root of the n-th weird number. 0
7, 8, 7, 7, 1, 1, 2, 8, 4, 1, 1, 7, 8, 5, 2, 7, 5, 1, 2, 7, 1, 4, 5, 1, 2, 8, 4, 1, 2, 8, 5, 2, 7, 4, 5, 1, 8, 7, 8, 4, 5, 4, 1, 8, 4, 5, 2, 4, 1, 7, 8, 5, 7, 8, 1, 8, 4, 2, 7, 4, 5, 2, 4, 5, 1, 2, 5, 7, 8, 1, 2, 8, 2, 7, 7, 4, 2, 8, 5, 1, 7, 5, 2, 8, 4, 1, 7, 8, 4, 7, 5, 1, 2, 5, 8, 5, 1, 4, 5, 2, 4, 2, 4, 2, 4, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..106.

FORMULA

a(n) = A010888(A006037(n)).

EXAMPLE

The 9th weird number is 10570. 1+0+5+7+0=13, and 1+3=4.

CROSSREFS

Cf. A006037

Sequence in context: A255685 A154192 A011283 * A064859 A233778 A217168

Adjacent sequences:  A179656 A179657 A179658 * A179660 A179661 A179662

KEYWORD

nonn,base

AUTHOR

Jason G. Wurtzel, Jul 23 2010

EXTENSIONS

Extended, keyword:base and formula added - R. J. Mathar, Jul 27 2010

STATUS

approved

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Last modified March 19 00:26 EDT 2019. Contains 321305 sequences. (Running on oeis4.)