OFFSET
1,2
FORMULA
a(n) = 2^(n-n^(1/2)).
PROG
(PARI) a(n)=2^(n-sqrtint(n)) \\ Charles R Greathouse IV, Apr 09 2012
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Nov 13 2003
STATUS
approved