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A168319 a(-1)=0. a(n)=a(n-1)^2-2^n. 0
-1, -1, -3, 1, -15, 193, 37185, 1382724097, 1911925928424465153, 3655460755781753047286544634111312897, 13362393337060505194526384126041275683735860286138280500673079957038531585 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..10.

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], {n, 10}] (* Harvey P. Dale, Aug 12 2011 *)

CROSSREFS

Sequence in context: A160628 A160604 A160616 * A326374 A143565 A143018

Adjacent sequences:  A168316 A168317 A168318 * A168320 A168321 A168322

KEYWORD

sign

AUTHOR

Vladimir Joseph Stephan Orlovsky, Nov 22 2009

EXTENSIONS

Added keyword:sign, corrected indices in definition - R. J. Mathar, Nov 24 2009

STATUS

approved

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Last modified October 13 18:14 EDT 2019. Contains 327981 sequences. (Running on oeis4.)