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15, 30, 60, 120, 240, 480, 960, 1920, 3840, 7680, 15360, 30720, 61440, 122880, 245760, 491520, 983040, 1966080, 3932160, 7864320, 15728640, 31457280, 62914560, 125829120, 251658240, 503316480, 1006632960, 2013265920, 4026531840, 8053063680, 16106127360
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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COMMENTS
| The first differences are the sequence itself. Doubling the terms gives the same sequence (beginning one step further).
15 times powers of 2. [From Omar E. Pol (info(AT)polprimos.com), Dec 17 2008]
a(n) = A173787(n+4,n). [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Feb 28 2010]
Subsequence of A051916. [From Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 20 2010]
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 0..235
Index entries for sequences related to linear recurrences with constant coefficients
Tanya Khovanova, Recursive Sequences
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FORMULA
| G.f.: 15/(1-2x). [From Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Nov 23 2008]
a(n) = A000079(n)*15 = A007283(n)*5 = A020714(n)*3. [From Omar E. Pol (info(AT)polprimos.com), Dec 17 2008]
a(n)=2*a(n-1) (with a(0)=15); [From Vincenzo Librandi, Dec 26 2010]
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MATHEMATICA
| 15*2^Range[0, 60] (* From Vladimir Joseph Stephan Orlovsky, June 09 2011 *)
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PROG
| (MAGMA) [15*2^n: n in [0..40]]; // Vincenzo Librandi, Apr 28 2011
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CROSSREFS
| Cf. A007283, A020714, A005009, A005010, A005015, A005029.
Cf. A000079. [From Omar E. Pol (info(AT)polprimos.com), Dec 17 2008]
Sequence in context: A188237 A190715 A115811 * A127526 A202522 A054305
Adjacent sequences: A110283 A110284 A110285 * A110287 A110288 A110289
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KEYWORD
| easy,nonn
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AUTHOR
| Alexandre Wajnberg (alexandre.wajnberg(AT)ulb.ac.be), Sep 07 2005
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EXTENSIONS
| Edited by Omar E. Pol, Dec 16 2008
More terms from Omar E. Pol (info(AT)polprimos.com), Dec 17 2008
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