OFFSET
0,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (38, -531, 3222, -7128).
FORMULA
From Vincenzo Librandi, Mar 14 2011: (Start)
a(n) = 23*a(n-1) - 132*a(n-2) + 3^n*(3^(n+1) - 2^(n+1)), a(0)=1, a(1)=38.
a(n) = 38*a(n-1) - 531*a(n-2) + 3222*a(n-3) - 7128*a(n-4), a(0)=1, a(1)=38, a(2)=913, a(3)=17738. (End)
a(n) = (5*12^(n+3) - 9*11^(n+3) + 5*9^(n+3) - 6^(n+3))/90. - Yahia Kahloune, Jun 12 2013
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved