The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A012382 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A012382

tanh(tan(x)*arcsin(x))=2/2!*x^2+12/4!*x^4-50/6!*x^6-14280/8!*x^8...
(history; published version)

#6 by Harvey P. Dale at Sat Nov 26 17:13:09 EST 2022

STATUS

editing

approved

#5 by Harvey P. Dale at Sat Nov 26 17:13:07 EST 2022

MATHEMATICA

With[{nn=30}, Take[CoefficientList[Series[Tanh[Tan[x]ArcSin[x]], {x, 0, nn}], x] Range[ 0, nn]!, {3, -1, 2}]] (* Harvey P. Dale, Nov 26 2022 *)

STATUS

approved

editing

#4 by Charles R Greathouse IV at Fri Feb 24 12:50:48 EST 2012

AUTHOR

Patrick Demichel (dmlpatrick.demichel(AT)hpfrcu03.france.hp.com)

Discussion

Fri Feb 24

12:50

OEIS Server: https://oeis.org/edit/global/108

#3 by N. J. A. Sloane at Fri May 16 03:00:00 EDT 2003

KEYWORD

sign,done,new

sign

AUTHOR

Patrick Demichel (dml@(AT)hpfrcu03.france.hp.com)

#2 by N. J. A. Sloane at Sun Jun 14 03:00:00 EDT 1998

REFERENCES

KEYWORD

sign,done,new

#1 by N. J. A. Sloane at Wed Dec 11 03:00:00 EST 1996

NAME

tanh(tan(x)*arcsin(x))=2/2!*x^2+12/4!*x^4-50/6!*x^6-14280/8!*x^8...

DATA

2, 12, -50, -14280, -1068422, -30200060, 10958392198, 3463555073776, 545166839566962, -49116089574216068, -83255760459250654530, -37791627619282937372632, -5498203465858654403105814

OFFSET

0,1

REFERENCES

KEYWORD

sign,done

AUTHOR

Patrick Demichel (dml@hpfrcu03.france.hp.com)

STATUS

approved