exp(arctanh(x)*arctan(x))=1+2/2!*x^2+12/4!*x^4+328/6!*x^6+13328/8!*x^8...
A012727
exp(arctanh(x)*arctan(x))=1+2/2!*x^2+12/4!*x^4+328/6!*x^6+13328/8!*x^8...
Terms
- a(0) =1a(1) =2a(2) =12a(3) =328a(4) =13328a(5) =1160352a(6) =123701952a(7) =22207125120
External references
- oeis: A012727