login
A189745
a(n) = 5*a(n-1) + a(n-2); with a(1)=5, a(2)=1.
13
5, 1, 10, 51, 265, 1376, 7145, 37101, 192650, 1000351, 5194405, 26972376, 140056285, 727253801, 3776325290, 19608880251, 101820726545, 528712512976, 2745383291425, 14255628970101, 74023528141930, 384373269679751, 1995889876540685, 10363822652383176
OFFSET
1,1
FORMULA
G.f.: x*(5-24*x)/(1-5*x-x^2). - Bruno Berselli, May 24 2011
MATHEMATICA
LinearRecurrence[{5, 1}, {5, 1}, 40]
PROG
(Maxima) a[1]:5$ a[2]:1$ a[n]:=5*a[n-1]+a[n-2]$ makelist(a[n], n, 1, 24); /*
Bruno Berselli, May 24 2011 */
KEYWORD
nonn,easy
AUTHOR
Harvey P. Dale, Apr 26 2011
STATUS
approved