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6, 24, 96, 384, 1536, 6144, 24576, 98304, 393216, 1572864, 6291456, 25165824, 100663296, 402653184, 1610612736, 6442450944, 25769803776, 103079215104, 412316860416, 1649267441664, 6597069766656, 26388279066624, 105553116266496, 422212465065984
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 0..200
Index entries for sequences related to linear recurrences with constant coefficients, signature (4).
Tanya Khovanova, Recursive Sequences
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FORMULA
| a(n)=4*a(n-1), n>0 ; a(0)=6 . G.f.: 6/(1-4*x). [From Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Nov 23 2008]
a(n) = 3 *A004171(n).
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MATHEMATICA
| 6*4^Range[0, 100] (* From Vladimir Joseph Stephan Orlovsky, June 09 2011 *)
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PROG
| (MAGMA) [6*4^n: n in [0..30]]; // Vincenzo Librandi, May 16 2011
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CROSSREFS
| Sequence in context: A079839 A169759 A164908 * A037505 A048179 A117614
Adjacent sequences: A002020 A002021 A002022 * A002024 A002025 A002026
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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