A138497 - OEIS

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A138497

Decimal expansion of arc length of the cycloid of Ceva.

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

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

OFFSET

2,1

LINKS

Table of n, a(n) for n=2..106.

Eric Weisstein's World of Mathematics, Cycloid of Ceva

EXAMPLE

20.015780680430397791...

MAPLE

evalf(16*EllipticE(sqrt(13)/4) - 3*EllipticK(sqrt(13)/4) + 3*EllipticPi(1/4, sqrt(13)/4), 120); # Vaclav Kotesovec, Apr 22 2015

MATHEMATICA

16*EllipticE[13/16] - 3*EllipticK[13/16] + 3*EllipticPi[1/4, 13/16]