A103713 - OEIS

A103713

Decimal expansion of the area of the surface generated by revolving about the y-axis that part of the curve y = log x lying in the 4th quadrant.

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

(list; constant; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Equal to Pi times its analog for the parabola (see A103710).

REFERENCES

C. E. Love, Differential and Integral Calculus, 4th ed., Macmillan, 1950, p. 288.

S. Reese, A universal parabolic constant, 2004, preprint.

LINKS

Table of n, a(n) for n=1..105.

S. R. Finch, Mathematical Constants, addenda, sec. 8.1

S. Reese, Pohle Colloquium Video Lecture: The universal parabolic constant, February 2, 2005