OFFSET
0,2
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..500
FORMULA
From Chai Wah Wu, Jan 26 2020: (Start)
a(n) = 14*a(n-1) - 76*a(n-2) + 224*a(n-3) - 406*a(n-4) + 476*a(n-5) - 364*a(n-6) + 176*a(n-7) - 49*a(n-8) + 6*a(n-9) for n > 8.
G.f.: (-7*x^8 - 711*x^7 - 7054*x^6 - 13249*x^5 - 4800*x^4 + 527*x^3 + 86*x^2 + 9*x - 1)/((x - 1)^8*(6*x - 1)). (End)
MATHEMATICA
Table[6^n-n^7, {n, 0, 60}] (* Vladimir Joseph Stephan Orlovsky, Feb 15 2011 *)
PROG
(Magma) [6^n-n^7: n in [0..25]]; // Vincenzo Librandi, Jul 03 2011
CROSSREFS
KEYWORD
sign,easy
AUTHOR
STATUS
approved