A040400 Continued fraction for sqrt(421).

20, 1, 1, 13, 5, 1, 3, 1, 2, 1, 1, 1, 2, 9, 1, 7, 3, 3, 2, 2, 3, 3, 7, 1, 9, 2, 1, 1, 1, 2, 1, 3, 1, 5, 13, 1, 1, 40, 1, 1, 13, 5, 1, 3, 1, 2, 1, 1, 1, 2, 9, 1, 7, 3, 3, 2, 2, 3, 3, 7, 1, 9, 2, 1, 1, 1, 2, 1, 3, 1, 5, 13, 1, 1, 40, 1, 1, 13, 5, 1, 3, 1, 2, 1, 1, 1, 2, 9, 1, 7

Offset

0,1

Links

Table of n, a(n) for n=0..89.

Index entries for continued fractions for constants

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

Maple

with(numtheory): Digits := 300: convert(evalf(sqrt(421)), confrac);

Mathematica

ContinuedFraction[Sqrt[421], 100] (* or *) PadRight[{20}, 100, {40, 1, 1, 13, 5, 1, 3, 1, 2, 1, 1, 1, 2, 9, 1, 7, 3, 3, 2, 2, 3, 3, 7, 1, 9, 2, 1, 1, 1, 2, 1, 3, 1, 5, 13, 1, 1}] (* Harvey P. Dale, Jun 15 2017 *)

Crossrefs

Sequence in context: A040403 A040402 A040401 * A139459 A154652 A155516

Adjacent sequences: A040397 A040398 A040399 * A040401 A040402 A040403

Keyword

nonn,cofr,easy

Author

N. J. A. Sloane.

Status

approved