This site is supported by donations to The OEIS Foundation.

"Email this user" was broken Aug 14 to 9am Aug 16. If you sent someone a message in this period, please send it again.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A248967 Decimal expansion for area bounded by x = 1, y = 1/x, and y = tan(1/x). 4
 2, 1, 3, 0, 7, 5, 9, 0, 5, 4, 6, 5, 3, 9, 2, 3, 0, 7, 4, 7, 9, 6, 3, 8, 0, 7, 6, 8, 2, 5, 7, 6, 5, 6, 8, 8, 2, 0, 7, 8, 6, 9, 6, 5, 9, 6, 5, 7, 0, 7, 6, 8, 6, 2, 9, 8, 6, 1, 6, 1, 1, 1, 1, 8, 5, 0, 1, 6, 1, 9, 4, 9, 2, 2, 7, 6, 5, 8, 0, 7, 9, 6, 6, 9, 1, 2 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Clark Kimberling, Table of n, a(n) for n = 0..300 FORMULA Let u,v,w be the constants at A248965, A248967, and A248968, respectively.  Then v = w - u. EXAMPLE area = 0.21307590546539230747963807682... MAPLE evalf(int(tan(1/x)-1/x, x = 1..infinity), 120); # Vaclav Kotesovec, Oct 20 2014 MATHEMATICA v = Integrate[Tan[1/x] - 1/x, {x, 1, Infinity}] N[v, 100] s = RealDigits[N[v, 200]][[1]] (* A248967 *) Plot[{Tan[1/x], 1/x}, {x, 1, 4}] CROSSREFS Cf. A248965, A248966, A248968. Sequence in context: A078024 A112469 A249455 * A160169 A117778 A072127 Adjacent sequences:  A248964 A248965 A248966 * A248968 A248969 A248970 KEYWORD nonn,easy,cons AUTHOR Clark Kimberling, Oct 18 2014 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.