arctanh(arctanh(x)*exp(x))=x+2/2!*x^2+7/3!*x^3+36/4!*x^4+293/5!*x^5...
A012717
arctanh(arctanh(x)*exp(x))=x+2/2!*x^2+7/3!*x^3+36/4!*x^4+293/5!*x^5...
Terms
- a(0) =0a(1) =1a(2) =2a(3) =7a(4) =36a(5) =293a(6) =2710a(7) =31099a(8) =408072a(9) =6199465a(10) =105183658a(11) =1990233551a(12) =41337728300a(13) =937722749325
External references
- oeis: A012717