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A005015 11*2^n. +0
8
11, 22, 44, 88, 176, 352, 704, 1408, 2816, 5632, 11264, 22528, 45056, 90112, 180224, 360448, 720896, 1441792, 2883584, 5767168, 11534336, 23068672, 46137344, 92274688, 184549376, 369098752, 738197504 (list; graph; listen)
OFFSET

0,1

COMMENT

An autocopy sequence: its first differences are the sequence itself. - Alexandre Wajnberg & Eric Angelini (alexandre.wajnberg(AT)ulb.ac.be), Sep 07 2005

11 times powers of 2. [From Omar E. Pol (info(AT)polprimos.com), Dec 16 2008]

A144472=-1,2,9,13,31,57,. a(n)=A144472(n+1)+A144472(n+2).Also a(n)=A144472(n+3)-A144472(n+1). A144472(n+1) is a Jacobsthal sequence from 2 and 9: A144472(n+3)=A144472(n+2)+2*A144472(n+1). Note a(n) mod 9=period 6:repeat 2,4,8,7,5,1=A153130(n+1). [From Paul Curtz (bpcrtz(AT)free.fr), Jan 06 2009]

LINKS

Index entries for sequences related to linear recurrences with constant coefficients

Tanya Khovanova, Recursive Sequences

FORMULA

G.f.: 11/(1-2*x).

a(n)=2*a(n-1), n>0 ; a(0)=11 . [From Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Nov 23 2008]

a(n) = A000079(n)*11. [From Omar E. Pol (info(AT)polprimos.com), Dec 16 2008]

MAPLE

with(finance):seq(futurevalue(11, 1, n), n=0..26); # [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Mar 24 2009]

CROSSREFS

Row sums of (10, 1)-Pascal triangle A093645.

Cf. A000079. [From Omar E. Pol (info(AT)polprimos.com), Dec 16 2008]

Sequence in context: A026037 A122613 A115768 this_sequence A070069 A109687 A111696

Adjacent sequences: A005012 A005013 A005014 this_sequence A005016 A005017 A005018

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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