sech(sinh(x)*arctan(x))=1-12/4!*x^4+120/6!*x^6+1680/8!*x^8...
A012565
sech(sinh(x)*arctan(x))=1-12/4!*x^4+120/6!*x^6+1680/8!*x^8...
Terms
- a(0) =1a(1) =0a(2) =-12a(3) =120a(4) =1680a(5) =-4800a(6) =-20091456a(7) =2552065152a(8) =-264925689600
External references
- oeis: A012565