0,1

a(n)^2 - 24*b(n)^2 = 25, with the companion sequence b(n)= A077410(n).

Index entries for sequences related to Chebyshev polynomials.

a(2*k)= A077409(k) and a(2*k+1)= A077250(k), k>=0.

a(n)= sqrt(24*A077410(n)^2 + 25).

G.f.: (1-x)*(7+18*x+7*x^2)/(1-10*x^2+x^4).

59 = a(2) = sqrt(24*A077410(2)^2 + 25) = sqrt(24*12^2 + 25)= sqrt(3481) = 59.

Sequence in context: A018508 A038277 A045462 this_sequence A085016 A067690 A061809

Adjacent sequences: A077408 A077409 A077410 this_sequence A077412 A077413 A077414

nonn,easy

Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de), Nov 08 2002