OFFSET
1,1
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..200
Index entries for linear recurrences with constant coefficients, signature (590,-1).
FORMULA
a(n+2) = 590*a(n+1)-a(n).
G.f.: 7*x*(x+1) / (x^2-590*x+1). - Colin Barker, Oct 21 2014
EXAMPLE
a(1)=7 because the first relation is 74^2=111*7^2+37.
MATHEMATICA
CoefficientList[Series[7 (x + 1)/(x^2 - 590 x + 1), {x, 0, 20}], x] (* Vincenzo Librandi, Oct 21 2014 *)
PROG
(PARI) Vec(7*x*(x+1)/(x^2-590*x+1) + O(x^20)) \\ Colin Barker, Oct 21 2014
(Magma) I:=[7, 4137]; [n le 2 select I[n] else 590*Self(n-1)-Self(n-2): n in [1..15]]; // Vincenzo Librandi, Oct 21 2014
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Richard Choulet, Oct 16 2008
EXTENSIONS
Editing and more terms from Colin Barker, Oct 21 2014
STATUS
approved