18,1

Pi * c^2 * s^2 represents the area of the circle with radius of one light second, where c = 299792458 m/s is the speed of light and s is seconds.

Table of n, a(n) for n=18..114.

Equals Pi*(299792458)^2, that is, A000796 * A003678^2.

282352266689536784.587705848234189... .

RealDigits[Pi*299792458^2, 10, 111][[1]] (* Robert G. Wilson v, Dec 03 2017 *)

Cf. A003678, A000796.

Sequence in context: A090975 A257579 A199715 * A074962 A064863 A021358

Adjacent sequences: A296046 A296047 A296048 * A296050 A296051 A296052

cons,nonn

Ahmad J. Masad, Dec 03 2017

More terms from Robert G. Wilson v, Dec 03 2017

approved