A013126 cosh(tanh(x)+log(x+1))=1+4/2!*x^2-6/3!*x^3+19/4!*x^4-140/5!*x^5...

1, 0, 4, -6, 19, -140, 814, -5082, 43509, -400248, 3812904, -42180270, 520553895, -6701464068, 92507196786, -1398195467970, 22513722221865, -380979724310896, 6839735642061708, -130277805146941014