# A355671 (b-file synthesized from sequence entry) 0 0 1 0 2 1 3 0 4 12 5 60 6 570 7 8190 8 134456 9 2408616 10 49307670 11 1159112130 12 30619757652 13 891045909468 14 28244653953698 15 969331283419590 16 35858099428919280 17 1423688804991442896 18 60402176709135347502 19 2726896792761748601226 20 130498364319404393167820