OFFSET
1,1
EXAMPLE
a(1)=3: 0,1,9; a(2)=8: 10,18,19,45,46,55,90,99.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Zak Seidov, Apr 25 2009
EXTENSIONS
a(9) from Donovan Johnson, Dec 08 2009
a(10)-a(11) from Donovan Johnson, Jul 31 2011
STATUS
approved