A087065 Sum{Floor(n*r^k): r=sqrt(3)-1, k>=0}.

0, 1, 4, 7, 10, 13, 17, 21, 24, 27, 31, 35, 37, 42, 46, 49, 52, 56, 61, 63, 67, 72, 74, 78, 81, 86, 90, 93, 97, 101, 103, 107, 111, 114, 119, 122, 127, 130, 132, 138, 141, 144, 147, 152, 155, 158, 164, 167, 170, 175, 178, 182, 185, 189, 193, 196, 199, 202, 207, 211

Offset

0,3

Links

Table of n, a(n) for n=0..59.

Example

a(3)=7=3+[3*r]+[3*r^2]+[3*r^3]+...

Crossrefs

Cf. A005187.

Sequence in context: A134027 A143455 A310684 * A001197 A276874 A310685

Adjacent sequences: A087062 A087063 A087064 * A087066 A087067 A087068

Keyword

nonn

Author

Clark Kimberling, Aug 07 2003

Status

approved