A012051 exp(sin(arctanh(x)))=1+x+1/2!*x^2+2/3!*x^3+5/4!*x^4+16/5!*x^5...

1, 1, 1, 2, 5, 16, 61, 216, 937, -1280, -34919, -1141504, -13257619, -263392128, -3269873515, -64804059904, -890367567919, -18858549039104, -286428853272143, -6592583427379200, -109915623105978539