OFFSET
0,2
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..500
FORMULA
From Chai Wah Wu, Jul 10 2016: (Start)
a(n) = 10*a(n-1) - 39*a(n-2) + 80*a(n-3) - 95*a(n-4) + 66*a(n-5) - 25*a(n-6) + 4*a(n-7) for n > 6.
G.f.: (-5*x^6 - 97*x^5 - 253*x^4 - 18*x^3 + 7*x^2 + 7*x - 1)/((x - 1)^6*(4*x - 1)). (End)
MATHEMATICA
Table[4^n-n^5, {n, 0, 60}] (* Vladimir Joseph Stephan Orlovsky, Feb 15 2011 *)
PROG
(Magma) [4^n-n^5: n in [0..30]]; // Vincenzo Librandi, Jul 02 2011
CROSSREFS
KEYWORD
sign,easy
AUTHOR
STATUS
approved