OFFSET
0,1
FORMULA
a(n) = 3*A033484(n).
MATHEMATICA
a=3; lst={a}; k=9; Do[a+=k; AppendTo[lst, a]; k+=k, {n, 0, 5!}]; lst (* Vladimir Joseph Stephan Orlovsky, Dec 16 2008 *)
9*2^Range[0, 40]-6 (* Harvey P. Dale, Sep 15 2013 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Parthasarathy Nambi, Sep 21 2004
STATUS
approved