OFFSET
6,1
COMMENTS
LINKS
Index entries for linear recurrences with constant coefficients, signature (4, -6, 4, -1).
FORMULA
a(n) = 4*a(n-1) - 6*a(n-2) + 4*a(n-3) - a(n-4).
G.f.: x^6*(2 - 3*x)/(x - 1)^4.
a(n) = -A111396(n-12) for n > 11. - Bruno Berselli, Oct 02 2018
MATHEMATICA
LinearRecurrence[{4, -6, 4, -1}, {2, 5, 8, 10}, 50] (* Harvey P. Dale, May 27 2012 *)
CROSSREFS
KEYWORD
sign,easy
AUTHOR
Jamel Ghanouchi, Nov 06 2009
EXTENSIONS
Minor edits by N. J. A. Sloane, Nov 09 2009
Definition simplified, sequence extended by R. J. Mathar, Nov 12 2009
STATUS
approved