# A012595 (b-file synthesized from sequence entry) 0 1 1 0 2 -1 3 -6 4 -15 5 60 6 975 7 5390 8 -10143 9 -563976 10 -5982945 11 -9594398 12 788690001 13 14618418100 14 85743956207 15 -2026783258890 16 -64627785960767 17 -716881015039504 18 7211897523161151 19 458865700394648778