OFFSET
1,1
REFERENCES
J.-M. De Koninck, Ces nombres qui nous fascinent, Entry 455, pp 94, Ellipses, Paris 2008.
FORMULA
a(n)=A033992(10^n).
CROSSREFS
KEYWORD
more,nonn
AUTHOR
Lekraj Beedassy, Jul 18 2008
EXTENSIONS
a(8)-a(10) from Donovan Johnson, Mar 30 2010
STATUS
approved