A012964 cos(arctan(x)+log(x+1))=1-4/2!*x^2+6/3!*x^3+13/4!*x^4-20/5!*x^5...

1, 0, -4, 6, 13, -20, -550, 1470, 23965, -91800, -1736800, 5533550, 261341425, -1560159900, -32046389050, 113528073750, 10312454985625, -82637650862000, -1992440583581500, 7977656452281750