# A012446 (b-file synthesized from sequence entry) 0 2 1 0 2 280 3 -2688 4 1016608 5 -44971520 6 22528934272 7 -2475890192384 8 1731096311210496 9 -365422134993502208 10 343466758613102303232 11 -121096429560806448922624 12 146997236520941470929985536