# A123765 (b-file synthesized from sequence entry) 1 1 2 1 3 3 4 4 5 12 6 18 7 52 8 83 9 235 10 389 11 1087 12 1851 13 5113 14 8891 15 24357 16 43045 17 117127 18 209731 19 567487 20 1027245 21 2766404 22 5053521 23 13554315 24 24954627 25 66696366 26 123628610 27 329400200 28 614216837 29 1632039074 30 3059240151 31 8108703876