# A376568 (b-file synthesized from sequence entry) 0 1 1 6 2 51 3 450 4 4095 5 37908 6 354978 7 3351348 8 31833945 9 303822090 10 2910657321 11 27970777926 12 269484894081 13 2602002636540 14 25170322256010 15 243876058527132 16 2366251795228437 17 22987502934573762 18 223563791480714685 19 2176402892261301990 20 21206170582394740371