OFFSET
0,3
LINKS
Đurđe Cvijović and Jacek Klinowski, An Application for the Chebyshev Polynomials, Mat. Vesnik 50 (1998), 105-110.
Index entries for linear recurrences with constant coefficients, signature (-4,-5).
FORMULA
a(n) = Sum_{k=0..n} C(n, k)*(-2)^(n-k)*(-1)^floor(k/2)*(1+(1-(-1)^k)/2).
MATHEMATICA
LinearRecurrence[{-4, -5}, {1, 0}, 40] (* Amiram Eldar, Jan 02 2026 *)
CROSSREFS
KEYWORD
easy,sign
AUTHOR
Paul Barry, Nov 21 2003
EXTENSIONS
Better name from Ralf Stephan, Jul 14 2013
STATUS
approved