exp(arctanh(x)*exp(x))=1+x+3/2!*x^2+12/3!*x^3+57/4!*x^4+340/5!*x^5...

A012709

exp(arctanh(x)*exp(x))=1+x+3/2!*x^2+12/3!*x^3+57/4!*x^4+340/5!*x^5...

Terms

    a(0) =1a(1) =1a(2) =3a(3) =12a(4) =57a(5) =340a(6) =2305a(7) =18186a(8) =158977a(9) =1560840a(10) =16695553a(11) =196272142a(12) =2483596577a(13) =34036624700a(14) =497515462561

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