login
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
OFFSET
1,1
FORMULA
a(n) = A010888(A006037(n)).
EXAMPLE
The 9th weird number is 10570. 1+0+5+7+0=13, and 1+3=4.
CROSSREFS
Sequence in context: A255685 A154192 A011283 * A064859 A364896 A233778
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