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A013786 7^(4n+1). 2
7, 16807, 40353607, 96889010407, 232630513987207, 558545864083284007, 1341068619663964900807, 3219905755813179726837607, 7730993719707444524137094407, 18562115921017574302453163671207, 44567640326363195900190045974568007 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

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

Tanya Khovanova, Recursive Sequences

Index entries for linear recurrences with constant coefficients, signature (2401).

FORMULA

a(n)=2401*a(n-1), n>0 ; a(0)=7 . G.f.: 7/(1-2401*x). a(n)=A013787(n)/49 . - Philippe Deléham, Dec 02 2008

PROG

(MAGMA) [7^(4*n+1): n in [0..15]]; // Vincenzo Librandi, Jun 28 2011

(PARI) a(n)=7^(4*n+1) \\ Charles R Greathouse IV, Jul 11 2016

CROSSREFS

Sequence in context: A203685 A134645 A115997 * A285178 A072050 A249765

Adjacent sequences:  A013783 A013784 A013785 * A013787 A013788 A013789

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified April 29 17:20 EDT 2017. Contains 285607 sequences.