A012267 arcsin(log(x+1)*log(x+1))=2/2!*x^2-6/3!*x^3+22/4!*x^4-100/5!*x^5...

2, -6, 22, -100, 668, -6048, 64776, -763488, 9918072, -144472680, 2365739880, -42879666960, 845124232080, -17930092309920, 408038138491200, -9939819541747200, 258294825756089760, -7127596576224545760