A013244 sec(log(x+1)-tan(x))=1+3/4!*x^4+90/6!*x^6-168/7!*x^7+5145/8!*x^8...

1, 0, 0, 0, 3, 0, 90, -168, 5145, -22176, 480564, -3388880, 66715803, -661044384, 12931436518, -165061218840, 3342012731057, -51969545948608, 1111264170332872, -20261556663255072, 462081844937750131

Offset

0,5

Links

Table of n, a(n) for n=0..20.

Crossrefs

Sequence in context: A013245 A013238 A013243 * A322458 A370712 A266380

Adjacent sequences: A013241 A013242 A013243 * A013245 A013246 A013247

Keyword

sign

Author

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

Status

approved