# A103998 (b-file synthesized from sequence entry) 0 1 1 11 2 71 3 539 4 4271 5 34276 6 276119 7 2226851 8 17965151 9 144948419 10 1169523076 11 9436433171 12 76139155439 13 614339685971 14 4956888901511 15 39995380044004 16 322708555336511 17 2603821045832171 18 21009309912323639