OFFSET
0,3
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..352
Wikipedia, Chebyshev polynomials.
FORMULA
a(n) = A323118(n)/(n+1).
a(n) = Sum_{k=0..floor(n/2)} (1/(2*k+1)) * binomial(n,2*k)*(n^2-1)^k*n^(n-2*k).
PROG
(PARI) {a(n) = polchebyshev(n, 2, n)/(n+1)}
(PARI) {a(n) = sum(k=0, n\2, binomial(n, 2*k)*(n^2-1)^k*n^(n-2*k)/(2*k+1))}
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Jan 07 2019
STATUS
approved