A010485 Decimal expansion of square root of 30.

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

Offset

1,1

Comments

Continued fraction expansion is 5 followed by {2, 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

Formula

Equals A010464*A002163 = 1/A020787. - R. J. Mathar, Dec 17 2024

Example

5.477225575051661134569697828008021339527446949979832542268944....

Mathematica

RealDigits[N[Sqrt[30], 200]][[1]] (* Vladimir Joseph Stephan Orlovsky, Feb 22 2011 *)

Prog

(PARI)  default(realprecision, 20080); x=sqrt(30); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b010485.txt", n, " ", d));  \\ Harry J. Smith, Jun 04 2009

Crossrefs

Cf. A040024, continued fraction. - Harry J. Smith, Jun 04 2009

Sequence in context: A004446 A115409 A010775 * A194362 A103549 A011285

Adjacent sequences: A010482 A010483 A010484 * A010486 A010487 A010488

Keyword

nonn,cons,easy

Author

N. J. A. Sloane

Status

approved