sech(sinh(x)*cos(x))=1-1/2!*x^2+13/4!*x^4-277/6!*x^6+12185/8!*x^8...
A012570
sech(sinh(x)*cos(x))=1-1/2!*x^2+13/4!*x^4-277/6!*x^6+12185/8!*x^8...
Terms
- a(0) =1a(1) =-1a(2) =13a(3) =-277a(4) =12185a(5) =-840489a(6) =84759717a(7) =-11842313277
External references
- oeis: A012570