OFFSET
0,2
COMMENTS
The only prime in the sequence through a(50) is a(2) = 13.
FORMULA
a(n) = Sum_{i=0..n} A001672(i).
a(n) = Sum_{i=0..n} floor(Pi^i).
MATHEMATICA
Accumulate[Table[Floor[\[Pi]^n], {n, 0, 30}]] (* Harvey P. Dale, Apr 21 2011 *)
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Jonathan Vos Post, May 02 2006
STATUS
approved