

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



