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A108732 a(0)=22; if n odd, a(n) = a(n-1)/2, otherwise a(n) = 4*a(n-1). 1
22, 11, 44, 22, 88, 44, 176, 88, 352, 176, 704, 352, 1408, 704, 2816, 1408, 5632, 2816, 11264, 5632, 22528, 11264, 45056, 22528, 90112, 45056, 180224, 90112, 360448, 180224, 720896, 360448, 1441792, 720896 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

a(2n+1)=a(2n-2). A108213 is a substring of this sequence and is also twice this sequence.

LINKS

Table of n, a(n) for n=0..33.

Index entries for linear recurrences with constant coefficients, signature (0,2)

FORMULA

Recurrence: a(n) = 2a(n-2), a(0)=22, a(1)=11. G.f.: (22x+44)/(1-2x^2). - Ralf Stephan, Jul 16 2013

a(n) = 11 * 2^A028242(n). - Franklin T. Adams-Watters, Mar 29 2006

CROSSREFS

Cf. A005015, A108213.

Sequence in context: A033342 A102612 A040465 * A033967 A262244 A140872

Adjacent sequences:  A108729 A108730 A108731 * A108733 A108734 A108735

KEYWORD

easy,nonn

AUTHOR

Alexandre Wajnberg & Guadalupe Garcia, Jun 22 2005

STATUS

approved

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Last modified October 20 07:33 EDT 2019. Contains 328252 sequences. (Running on oeis4.)