A228721 Decimal expansion of 7*Pi.

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

Offset

2,1

Comments

7*Pi is also the surface area of a sphere whose diameter equals the square root of 7. More generally x*Pi is also the surface area of a sphere whose diameter equals the square root of x. - Omar E. Pol, Dec 22 2013

Links

Table of n, a(n) for n=2..105.

Index entries for transcendental numbers

Example

21.99114857512855266923850368295652018938...

Mathematica

RealDigits[7*Pi, 10, 120][[1]] (* Harvey P. Dale, Jan 14 2015 *)

Prog

(PARI) 7*Pi \\ Charles R Greathouse IV, Oct 01 2022

Crossrefs

Cf. A000796, A019692, A122952, A019694, A019669, A228719 (Pi through 6*Pi).

Sequence in context: A198106 A243261 A230358 * A108290 A308804 A364709

Adjacent sequences: A228718 A228719 A228720 * A228722 A228723 A228724

Keyword

nonn,cons

Author

Omar E. Pol, Oct 03 2013

Status

approved