A012918 arcsinh(arcsin(x)+sin(x))=2*x-8/3!*x^3+298/5!*x^5-29416/7!*x^7...

2, -8, 298, -29416, 5805010, -1886608616, 917162117818, -622654532107336, 562865488506452130, -653565528977071759176, 947976470998802461571146, -1679754223193478305467460648, 3570405336414257223991774221426