# A097114 (b-file synthesized from sequence entry) 0 1 1 8 2 57 3 400 4 3193 5 20000 6 176457 7 1000000 8 9646393 9 50000000 10 522673257 11 2500000000 12 28110989593 13 125000000000 14 1502438490057 15 6250000000000 16 79869486012793 17 312500000000000 18 4226104814626857 19 15625000000000000