A168320 a(-1)=0. a(n)=a(n-1)^2+2^n.

1, 3, 13, 177, 31345, 982509057, 965324047087029313, 931850515884481186273153523321252097, 868345383954173723655205051633111454677692184821907897236578371826897665

Offset

0,2

Links

Table of n, a(n) for n=0..8.

Mathematica

a=0; Table[a=a^2+2^n, {n, 0, 11}]
RecurrenceTable[{a[-1]==0, a[n]==a[n-1]^2+2^n}, a, {n, 10}] (* Harvey P. Dale, Jun 12 2014 *)

Crossrefs

Sequence in context: A336204 A261361 A114317 * A323134 A368499 A081299

Adjacent sequences: A168317 A168318 A168319 * A168321 A168322 A168323

Keyword

nonn

Author

Vladimir Joseph Stephan Orlovsky, Nov 22 2009

Extensions

Definition corrected - R. J. Mathar, Nov 24 2009

Status

approved