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

Author

N. J. A. Sloane

Keywords

• nonn
• cons
• easy

Comments

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

Examples

			5.567764362830021922119471298918549520476393377570414303968432585603589....
		

Links

• Harry J. Smith, Table of n, a(n) for n = 1..20000
• Index entries for algebraic numbers, degree 2

Crossrefs

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

Programs

Mathematica

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

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