OFFSET
1,2
COMMENTS
a(5) contains 121 digits.
FORMULA
a(n) = A050647(n)^3.
a(n) = (Sum_{i=0..n-1} 10^((3^i-1)/2) )^3. - Max Alekseyev, Jan 07 2015
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Patrick De Geest, Jul 15 1999
STATUS
approved