exp(arctanh(x)*tanh(x)) = 1+2/2!*x^2+12/4!*x^4+280/6!*x^6+13328/8!*x^8...
A012754
exp(arctanh(x)*tanh(x)) = 1+2/2!*x^2+12/4!*x^4+280/6!*x^6+13328/8!*x^8...
Terms
- a(0) =1a(1) =2a(2) =12a(3) =280a(4) =13328a(5) =1016608a(6) =120249536a(7) =19735743872
External references
- oeis: A012754