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A232272 Decimal expansion of the arctan of 1/Pi. 1
3, 0, 8, 1, 6, 9, 0, 7, 1, 1, 1, 5, 9, 8, 4, 9, 3, 5, 7, 8, 6, 9, 9, 9, 6, 0, 8, 0, 3, 4, 0, 5, 3, 0, 9, 8, 5, 8, 9, 6, 3, 7, 0, 2, 9, 2, 6, 3, 1, 6, 9, 3, 1, 3, 5, 1, 3, 6, 6, 2, 3, 4, 3, 9, 0, 1, 6, 8, 2, 9, 0, 0, 4, 5, 1, 3, 7, 0, 5, 3, 3, 9, 6, 8, 9 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..84.

FORMULA

Equals A019669 - A232273.

Equals Sum_{i>=0} (-1)^k/((1+2*k)*Pi^(1+2*k)).

EXAMPLE

0.30816907111598493578699960803405309858963702926316931351366234390168...

MATHEMATICA

RealDigits[ArcTan[1/Pi], 10, 90][[1]]

CROSSREFS

Cf. A019669, A049541, A232247, A232273.

Sequence in context: A022895 A197416 A197512 * A186744 A200507 A296042

Adjacent sequences:  A232269 A232270 A232271 * A232273 A232274 A232275

KEYWORD

nonn,cons

AUTHOR

Bruno Berselli, Nov 22 2013

STATUS

approved

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Last modified March 20 09:23 EDT 2019. Contains 321345 sequences. (Running on oeis4.)