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A000659 a(n) = 2^a(n-1) + a(n-2). 1
0, 0, 1, 2, 5, 34, 17179869189 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

COMMENTS

The next term has 5171655948 digits. [From Franklin T. Adams-Watters, Jul 03 2009]

LINKS

Table of n, a(n) for n=0..6.

MATHEMATICA

Join[{a=0, b=0}, Table[c=2^b+a; a=b; b=c, {n, 5}]] (* Vladimir Joseph Stephan Orlovsky, Apr 13 2011 *)

CROSSREFS

Cf. A000643.

Sequence in context: A241586 A000665 A058882 * A164919 A272678 A063443

Adjacent sequences:  A000656 A000657 A000658 * A000660 A000661 A000662

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified August 25 14:35 EDT 2019. Contains 326324 sequences. (Running on oeis4.)