# A089068 (b-file synthesized from sequence entry) 0 0 1 0 2 1 3 3 4 6 5 12 6 23 7 43 8 80 9 148 10 273 11 503 12 926 13 1704 14 3135 15 5767 16 10608 17 19512 18 35889 19 66011 20 121414 21 223316 22 410743 23 755475 24 1389536 25 2555756 26 4700769 27 8646063 28 15902590 29 29249424 30 53798079 31 98950095 32 181997600 33 334745776 34 615693473