arcsin(tanh(x)+arctan(x))=2*x+4/3!*x^3+168/5!*x^5+13248/7!*x^7...
A013142
arcsin(tanh(x)+arctan(x))=2*x+4/3!*x^3+168/5!*x^5+13248/7!*x^7...
Terms
- a(0) =2a(1) =4a(2) =168a(3) =13248a(4) =2226048a(5) =599902208a(6) =243130652672
External references
- oeis: A013142