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

Author

Omar E. Pol, Oct 03 2013

Keywords

• nonn
• cons

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

Examples

			21.99114857512855266923850368295652018938...
		

Links

• Index entries for transcendental numbers

Crossrefs

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

Programs

Mathematica

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

PARI

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