# A117733 (b-file synthesized from sequence entry) 1 2 2 3 3 7 4 10 5 34 6 54 7 234 8 402 9 1938 10 17490 11 19590 12 209670 13 237390 14 2933070 15 43575630 16 696759630 17 697240110 18 12541643310 19 12550832490 20 250832355690