A179241 Powers of sqrt(5) - 1 rounded down.

1, 1, 1, 2, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 24, 29, 36, 45, 56, 69, 85, 105, 130, 161, 200, 247, 305, 377, 466, 577, 713, 881, 1089, 1347, 1665, 2058, 2544, 3144, 3887, 4805, 5939, 7341, 9074, 11216, 13864, 17137, 21183, 26183, 32364, 40005, 49449, 61122

Offset

1,4

Links

Table of n, a(n) for n=1..52.

Formula

a(n) = floor((sqrt(5)-1)^n).

Mathematica

Array[Floor[(Sqrt@5 - 1)^# ] &, 51] (* Robert G. Wilson v, Jul 12 2010 *)

Crossrefs

Sequence in context: A100926 A351008 A258875 * A316082 A157046 A017979

Adjacent sequences: A179238 A179239 A179240 * A179242 A179243 A179244

Keyword

nonn,easy

Author

Roland Schroeder (florola(AT)gmx.de), Jul 05 2010

Extensions

More terms from Vincenzo Librandi and Robert G. Wilson v, Jul 09 2010

Status

approved