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A332633 Decimal expansion of arclength between (0,0) and (Pi/4,1) on y = tan x. 5
1, 2, 7, 7, 9, 7, 8, 0, 5, 9, 2, 7, 7, 9, 3, 4, 4, 1, 8, 5, 6, 7, 0, 5, 6, 6, 2, 3, 0, 2, 9, 8, 3, 3, 4, 4, 9, 7, 2, 1, 7, 7, 0, 7, 8, 6, 6, 9, 4, 2, 2, 5, 5, 0, 2, 0, 8, 2, 9, 3, 3, 7, 0, 0, 9, 6, 4, 5, 1, 6, 9, 1, 2, 0, 1, 2, 4, 8, 9, 1, 7, 9, 3, 9, 7, 6 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..86.

EXAMPLE

arclength = 1.277978059277934418567056623029833449721770...

MATHEMATICA

s = Integrate[Sqrt[1 + D[Tan[x], x]^2], {x, 0, Pi/4}]

r = N[s, 200]

RealDigits[r][[1]]

CROSSREFS

Cf. A333202, A3326334, A332635.

Sequence in context: A330479 A257960 A238734 * A316352 A114532 A003061

Adjacent sequences:  A332630 A332631 A332632 * A332634 A332635 A332636

KEYWORD

nonn,cons,easy

AUTHOR

Clark Kimberling, Jun 12 2020

STATUS

approved

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Last modified August 4 12:33 EDT 2021. Contains 346447 sequences. (Running on oeis4.)