0,2

Index entries for sequences related to Chebyshev polynomials.

a(n)=((3+sqrt(13)^n(11+3sqrt(13))/13+(3-sqrt(13)^n(11-3sqrt(13))/13)2^(-1-n)+2(-1)^n/13; a(n)=(-i)^nsum{k=0..floor(n/2), U(n-2k, 3i/2)} with i^2=-1.

Cf. A006498.

Sequence in context: A052906 A102898 A050181 this_sequence A096222 A090573 A048119

Adjacent sequences: A089928 A089929 A089930 this_sequence A089932 A089933 A089934

easy,nonn

Paul Barry (pbarry(AT)wit.ie), Nov 15 2003