OFFSET
1,4
FORMULA
For n>1, a(n) = floor(sqrt(2^(n+2))) - n - 2
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, Nov 27 2002
EXTENSIONS
Extended by Robert G. Wilson v, Dec 02 2002
More terms from Max Alekseyev, Feb 12 2012
STATUS
approved