OFFSET
0,1
COMMENTS
All terms are multiples of 22.
REFERENCES
Hugo Steinhaus: Studentenfutter, Urania, Leipzig 1991, #5
LINKS
Index entries for linear recurrences with constant coefficients, signature (4392,-4208207,777600000)
FORMULA
G.f. -22*(1-2926*x+754280*x^2) / ( (243*x-1)*(3125*x-1)*(1024*x-1) ). - R. J. Mathar, Aug 09 2013
PROG
(Haskell)
a221639 n = 5 ^ (5 * n + 1) + 4 ^ (5 * n + 2) + 3 ^ (5 * n)
(PARI) a(n)=5^(5*n+1)+4^(5*n+2)+243^n \\ Charles R Greathouse IV, Aug 09 2013
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Reinhard Zumkeller, Aug 08 2013
STATUS
approved