A010486 Decimal expansion of square root of 31.

5, 5, 6, 7, 7, 6, 4, 3, 6, 2, 8, 3, 0, 0, 2, 1, 9, 2, 2, 1, 1, 9, 4, 7, 1, 2, 9, 8, 9, 1, 8, 5, 4, 9, 5, 2, 0, 4, 7, 6, 3, 9, 3, 3, 7, 7, 5, 7, 0, 4, 1, 4, 3, 0, 3, 9, 6, 8, 4, 3, 2, 5, 8, 5, 6, 0, 3, 5, 8, 9, 8, 3, 9, 2, 5, 4, 2, 3, 6, 2, 9, 2, 9, 2, 7, 2, 1, 8, 3, 9, 6, 1, 8, 4, 9, 2, 6, 6, 7

Offset

1,1

Comments

Continued fraction expansion is 5 followed by {1, 1, 3, 5, 3, 1, 1, 10} repeated. - Harry J. Smith, Jun 04 2009

Links

Harry J. Smith, Table of n, a(n) for n = 1..20000

Index entries for algebraic numbers, degree 2

Example

5.567764362830021922119471298918549520476393377570414303968432585603589....

Mathematica

RealDigits[N[Sqrt[31], 100]][[1]] (* Vladimir Joseph Stephan Orlovsky, Feb 22 2011 *)

Prog

(PARI)  default(realprecision, 20080); x=sqrt(31); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b010486.txt", n, " ", d));  \\ Harry J. Smith, Jun 04 2009

Crossrefs

Cf. A010129 (continued fraction). - Harry J. Smith, Jun 04 2009

Sequence in context: A106746 A152481 A157276 * A298185 A329082 A111423

Adjacent sequences: A010483 A010484 A010485 * A010487 A010488 A010489

Keyword

nonn,cons,easy

Author

N. J. A. Sloane

Status

approved