OFFSET
0,2
LINKS
FORMULA
a(n) = 15*a(n-1) - 44*a(n-2) for n >= 2. - Vincenzo Librandi, Mar 18 2011
a(n) = 11*a(n-1) + 4^n for n >= 1. - Vincenzo Librandi, Mar 18 2011
a(n) = (11^(n+1) - 2^(2*n+2))/7. - R. J. Mathar, Mar 20 2011
MAPLE
MATHEMATICA
Join[{a=1, b=15}, Table[c=15*b-44*a; a=b; b=c, {n, 60}]] (* Vladimir Joseph Stephan Orlovsky, Feb 01 2011 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved