A013443 tan(tan(x)-arctan(x))=4/3!*x^3-8/5!*x^5+992/7!*x^7+3456/9!*x^9...

4, -8, 992, 3456, 2799872, 106544128, 37168683008, 4255728041984, 1543239875821568, 355403465489907712, 155864209273777553408, 58585654628727325196288, 32351390426329866422976512

Offset

0,1

Links

Table of n, a(n) for n=0..12.

Crossrefs

Sequence in context: A260726 A308553 A177860 * A013442 A013441 A013445

Adjacent sequences: A013440 A013441 A013442 * A013444 A013445 A013446

Keyword

sign

Author

Patrick Demichel (patrick.demichel(AT)hp.com)

Status

approved