A013127 sec(tanh(x)+log(x+1))=1+4/2!*x^2-6/3!*x^3+83/4!*x^4-460/5!*x^5...

1, 0, 4, -6, 83, -460, 5374, -52962, 711833, -9731160, 156311784, -2676262710, 50867352939, -1037096208564, 22896291533210, -539916293280210, 13603842760270129, -363832977079307248, 10308592491205055532