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A029749 2^n times 1, 5 or 7. 1
1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 40, 56, 64, 80, 112, 128, 160, 224, 256, 320, 448, 512, 640, 896, 1024, 1280, 1792, 2048, 2560, 3584, 4096, 5120, 7168, 8192, 10240, 14336, 16384, 20480, 28672, 32768, 40960, 57344, 65536, 81920, 114688, 131072 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

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

FORMULA

a(n) = 2*a(n-3) for n>4. G.f.: -(3*x^4+3*x^3+4*x^2+2*x+1) / (2*x^3-1). - Colin Barker, Jul 19 2013

MATHEMATICA

CoefficientList[Series[-(3 x^4 + 3 x^3 + 4 x^2 + 2 x + 1) / (2 x^3 - 1), {x, 0, 40}], x] (* Vincenzo Librandi, Jul 20 2013 *)

CROSSREFS

Sequence in context: A326669 A123064 A108513 * A018519 A050054 A018371

Adjacent sequences:  A029746 A029747 A029748 * A029750 A029751 A029752

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Colin Barker, Jul 19 2013

STATUS

approved

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Last modified September 22 19:36 EDT 2021. Contains 347608 sequences. (Running on oeis4.)