0,1

Table of n, a(n) for n=0..74.

Index entries for continued fractions for constants

Index entries for linear recurrences with constant coefficients, signature (0, 1).

a(n)=21+19*(-1)^n-20*[C(2*n,n) mod 2], with n>=0 [From Paolo P. Lava, Apr 30 2009]

with(numtheory): Digits := 300: convert(evalf(sqrt(420)), confrac);

Sequence in context: A303847 A303849 A277981 * A040390 A040391 A255860

Adjacent sequences: A040396 A040397 A040398 * A040400 A040401 A040402

nonn,cofr,easy

N. J. A. Sloane.

approved