A128093 a(n) = smallest multiple of n which is >= 2^n.
2, 4, 9, 16, 35, 66, 133, 256, 513, 1030, 2057, 4104, 8203, 16394, 32775, 65536, 131087, 262152, 524305, 1048580, 2097165, 4194322, 8388629, 16777224, 33554450, 67108886, 134217729, 268435468, 536870939, 1073741850, 2147483677
Offset: 1
Keywords
Links
- G. C. Greubel, Table of n, a(n) for n = 1..1000
Programs
-
Mathematica
f[n_] := n*Ceiling[2^n/n];Array[f, 33] (* Ray Chandler, Feb 19 2007 *)
-
Python
def A128093(n): return (m:=1<
Formula
a(n) = n * ceiling(2^n/n) = n * A053638(n).
Extensions
Extended by Ray Chandler, Feb 19 2007