sech(sinh(x)+arctan(x))=1-4/2!*x^2+88/4!*x^4-5014/6!*x^6...

A013067

sech(sinh(x)+arctan(x))=1-4/2!*x^2+88/4!*x^4-5014/6!*x^6...

Terms

    a(0) =1a(1) =-4a(2) =88a(3) =-5014a(4) =538376a(5) =-93064954a(6) =23605179172

External references