# A172435 (b-file synthesized from sequence entry) 1 2 2 5 3 10 4 17 5 28 6 41 7 58 8 95 9 174 10 287 11 484 12 683 13 1020 14 2213 15 5992 16 17931 17 37868 18 231807 19 431740 20 1111111111111542851 21 11112222222222222653962