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7, 28, 112, 448, 1792, 7168, 28672, 114688, 458752, 1835008, 7340032, 29360128, 117440512, 469762048, 1879048192, 7516192768, 30064771072, 120259084288, 481036337152, 1924145348608, 7696581394432, 30786325577728, 123145302310912, 492581209243648
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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COMMENTS
| Subsequence of A000069, the odious numbers. - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Aug 26 2007
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LINKS
| Vincenzo Librandi, Table of n, a(n) for n = 0..500
Index entries for sequences related to linear recurrences with constant coefficients
Tanya Khovanova, Recursive Sequences
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FORMULA
| a(n)=4*a(n-1), n>0 ; a(0)=7 . G.f.: 7/(1-4*x). [From Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Nov 23 2008]
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MATHEMATICA
| 7*4^Range[0, 100] (* From Vladimir Joseph Stephan Orlovsky, June 09 2011 *)
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PROG
| (MAGMA) [7*4^n: n in [0..30]]; // Vincenzo Librandi, May 31 2011
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CROSSREFS
| First differences of A083597. Bisection of A005009.
Sequence in context: A200762 A026642 A200467 * A200666 A207098 A037597
Adjacent sequences: A002039 A002040 A002041 * A002043 A002044 A002045
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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