A232182 Decimal expansion of the arctan of Pi/2.

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

Offset

1,4

Links

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

Formula

Equals A019669 - A232247. [Bruno Berselli, Nov 20 2013]

Example

Equals 1.00388482185388721414842394491713228829210446059487057472971...

Maple

evalf(arctan(Pi/2)) ;

Mathematica

RealDigits[ArcTan[Pi/2], 10, 120][[1]] (* Harvey P. Dale, Jan 31 2015 *)

Crossrefs

Cf. A019669, A232247.

Sequence in context: A102639 A378677 A371941 * A118817 A179553 A157471

Adjacent sequences: A232179 A232180 A232181 * A232183 A232184 A232185

Keyword

cons,nonn

Author

R. J. Mathar, Nov 20 2013

Status

approved