# A237272 (b-file synthesized from sequence entry) 0 0 1 0 2 0 3 3 4 9 5 27 6 83 7 211 8 522 9 1222 10 2874 11 6496 12 14593 13 32185 14 70423 15 153024 16 330195 17 708933 18 1514821 19 3224134 20 6836547 21 14455648 22 30475210 23 64096487 24 134493519 25 281642590 26 588642240 27 1228160742 28 2558300338 29 5321065857 30 11051923912 31 22925167566