# A009643 (b-file synthesized from sequence entry) 0 0 1 1 2 -1 3 7 4 -24 5 155 6 -1095 7 9497 8 -94248 9 1059845 10 -13281525 11 183496091 12 -2769635616 13 45333709967 14 -799674327179 15 15121294153565 16 -305107579902960 17 6542782753769737 18 -148587216992008713 19 3562420906863755695