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A068950
Digital roots of A068809.
3
1, 4, 9, 4, 7, 1, 4, 9, 4, 7, 9, 4, 7, 1, 4, 7, 9, 1, 4, 7, 9, 1, 4, 7, 1, 4, 7, 9, 1, 4, 7, 9, 1, 4, 7, 1, 4, 7, 9, 1, 4, 7, 9, 1, 4, 7, 1, 4, 7, 1, 4, 7, 9, 4, 9, 1, 4, 7, 9, 1, 4, 9, 1, 4, 7, 9, 1, 4, 7, 9, 1, 4, 7, 9, 1, 4, 7, 9, 1, 4
OFFSET
1,2
EXAMPLE
a(4)=4 since A068809(4)=49 and so 4+9=13 and 1+3=4.
CROSSREFS
Sequence in context: A197582 A086277 A271948 * A021673 A372912 A224299
KEYWORD
more,nonn,base
AUTHOR
Francois Jooste (phukraut(AT)hotmail.com), Mar 15 2002
EXTENSIONS
a(43)-a(80) from Giovanni Resta, Jun 27 2018
STATUS
approved