OFFSET
0,1
COMMENTS
The first differences are the sequence itself. Doubling the terms gives the same sequence (beginning one step further).
19 times powers of 2. - Omar E. Pol, Dec 17 2008
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..235
Tanya Khovanova, Recursive Sequences
Index entries for linear recurrences with constant coefficients, signature (2).
FORMULA
G.f.: 19/(1-2*x). - Philippe Deléham, Nov 23 2008
a(n) = A000079(n)*19. - Omar E. Pol, Dec 17 2008
E.g.f.: 19*exp(2*x). - G. C. Greubel, Jan 04 2023
MATHEMATICA
19*2^Range[0, 60] (* Vladimir Joseph Stephan Orlovsky, Jun 09 2011 *)
NestList[2#&, 19, 30] (* Harvey P. Dale, May 11 2018 *)
PROG
(Magma) [19*2^n: n in [0..40]]; // Vincenzo Librandi, Apr 28 2011
(SageMath) [19*2^n for n in range(41)] # G. C. Greubel, Jan 04 2023
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Alexandre Wajnberg, Sep 07 2005
EXTENSIONS
Edited by Omar E. Pol, Dec 16 2008
STATUS
approved