# A368687 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 6 5 8 6 17 7 25 8 50 9 84 10 158 11 275 12 525 13 928 14 1731 15 3146 16 5818 17 10610 18 19611 19 35891 20 66174 21 121442 22 223593 23 410745 24 756045 25 1389545 26 2556686 27 4700854 28 8647799 29 15902592 30 29252734 31 53798081 32 98955914 33 181997878 34 334756388 35 615693506 36 1132456971 37 2082876104 38 3831042321 39 7046320314 40 12960268134