A012449 sinh(arctan(x)*tan(x))=2/2!*x^2+280/6!*x^6-2688/8!*x^8+774688/10!*x^10...

2, 0, 280, -2688, 774688, -44971520, 12196692352, -2010939305984, 682495898190336, -217798427799339008, 100459217814408271872, -50559840345962764140544, 31791509418375951964839936

Offset

0,1

Links

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

Crossrefs

Sequence in context: A348183 A012330 A012336 * A012446 A324687 A012755

Adjacent sequences: A012446 A012447 A012448 * A012450 A012451 A012452

Keyword

sign

Author

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

Status

approved