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A013741 a(n) = 7^(3*n + 2). 2
49, 16807, 5764801, 1977326743, 678223072849, 232630513987207, 79792266297612001, 27368747340080916343, 9387480337647754305649, 3219905755813179726837607, 1104427674243920646305299201, 378818692265664781682717625943 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
LINKS
Tanya Khovanova, Recursive Sequences
FORMULA
From Philippe Deléham, Nov 28 2008: (Start)
a(n) = 343*a(n-1); a(0)=49.
G.f.: 49/(1-343*x). (End)
MAPLE
seq(7^(3*n+2), n=0..11); # Nathaniel Johnston, Jun 26 2011
MATHEMATICA
7^(3Range[0, 20]+2) (* or *) NestList[343#&, 49, 20] (* Harvey P. Dale, Oct 03 2012 *)
PROG
(Magma) [7^(3*n+2): n in [0..15]]; // Vincenzo Librandi, May 25 2011
(PARI) a(n)=7^(3*n+2) \\ Charles R Greathouse IV, Jul 11 2016
CROSSREFS
Cf. A013740.
Sequence in context: A145251 A202991 A203061 * A178190 A319941 A210819
KEYWORD
nonn,easy
AUTHOR
STATUS
approved

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Last modified March 19 02:44 EDT 2024. Contains 370952 sequences. (Running on oeis4.)