A011455 Sum 2^Fibonacci(i), i=2..n.

2, 6, 14, 46, 302, 8494, 2105646, 17181974830, 36028814200938798, 618970019678718951650500910, 22300745198530623760505737951367313156481326, 13803492693581127574869511746854796103432841704846511061692361604079918

Offset: 2

Author

Bagirath R. Krishnamachari (bagi(AT)miel.mot.com)

Keywords

• nonn
• easy

Links

• Ivan Panchenko, Table of n, a(n) for n = 2..18

Programs

Mathematica

Accumulate[2^Fibonacci[Range[2,15]]] (* Harvey P. Dale, May 07 2013 *)

Formula

Partial sums of A000301 (first 2 terms skipped). - R. J. Mathar, Apr 26 2007

Extensions

Name corrected by T. D. Noe, Mar 03 2011

a(13) from Harvey P. Dale, May 07 2013