0,2

The row sums of the rational triangle A164658/A164659 give A164660/A164661.

Table of n, a(n) for n=0..63.

Index entries for sequences related to Chebyshev polynomials.

a(n)=sum(A164659(n,m),m=1..n+1), n>=0.

Row sums of numerator triangle A164658 gives A164662.

Sequence in context: A049757 A190864 A155537 * A098971 A093572 A317650

Adjacent sequences: A164660 A164661 A164662 * A164664 A164665 A164666

nonn,easy

Wolfdieter Lang, Oct 16 2009

approved