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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. - Franklin T. Adams-Watters, Jul 03 2009
LINKS
MATHEMATICA
Join[{a=0, b=0}, Table[c=2^b+a; a=b; b=c, {n, 5}]] (* Vladimir Joseph Stephan Orlovsky, Apr 13 2011 *)
nxt[{a_, b_}]:={b, 2^b+a}; NestList[nxt, {0, 0}, 6][[All, 1]] (* Harvey P. Dale, Apr 09 2022 *)
CROSSREFS
Cf. A000643.
Sequence in context: A241586 A000665 A058882 * A164919 A272678 A063443
KEYWORD
nonn
AUTHOR
STATUS
approved

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Last modified April 22 09:42 EDT 2024. Contains 371894 sequences. (Running on oeis4.)