OFFSET
1,2
COMMENTS
The corresponding values of y of this Pell equation are in A174775
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 1..200
Index entries for linear recurrences with constant coefficients, signature (146,-1).
FORMULA
a(n) = 146*a(n-1)-a(n-2) with a(1)=1, a(2)=73.
G.f.: x*(1-73*x)/(1-146*x+x^2). - Bruno Berselli, Apr 18 2011
MATHEMATICA
LinearRecurrence[{146, -1}, {1, 73}, 30]
PROG
(Magma) I:=[1, 73]; [n le 2 select I[n] else 146*Self(n-1)-Self(n-2): n in [1..20]];
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Apr 12 2010
STATUS
approved