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A013787 7^(4n+3). 2
343, 823543, 1977326743, 4747561509943, 11398895185373143, 27368747340080916343, 65712362363534280139543, 157775382034845806615042743, 378818692265664781682717625943, 909543680129861140820205019889143, 2183814375991796599109312252753832343 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..200

Tanya Khovanova, Recursive Sequences

FORMULA

a(n)=2401*a(n-1), n>0 ; a(0)=343 . G.f.: 343/(1-2401*x). a(n)=49*A013786(n). [From Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Dec 02 2008]

PROG

(MAGMA) [7^(4*n+3): n in [0..15]]; // Vincenzo Librandi, Jun 28 2011

CROSSREFS

Sequence in context: A140250 A117197 A046236 * A013844 A044878 A085336

Adjacent sequences:  A013784 A013785 A013786 * A013788 A013789 A013790

KEYWORD

nonn,easy

AUTHOR

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

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Last modified February 16 17:48 EST 2012. Contains 205939 sequences.