sec(sech(x)*log(x+1))=1+1/2!*x^2-3/3!*x^3+4/4!*x^4-40/5!*x^5...
A012876
sec(sech(x)*log(x+1))=1+1/2!*x^2-3/3!*x^3+4/4!*x^4-40/5!*x^5...
Terms
- a(0) =1a(1) =0a(2) =1a(3) =-3a(4) =4a(5) =-40a(6) =370a(7) =-2100a(8) =19052a(9) =-224712a(10) =2295380a(11) =-27161420a(12) =388309832a(13) =-5572831680a(14) =85093639488
External references
- oeis: A012876