# A203573 (b-file synthesized from sequence entry) 0 4 1 13 2 45 3 152 4 491 5 1531 6 4652 7 13865 8 40713 9 118144 10 339559 11 968183 12 2742100 13 7721797 14 21637221 15 60367976 16 167787107 17 464776435 18 1283571068 19 3535240289 20 9713031489 21 26627195728 22 72847698655 23 198929987567 24 542305383076 25 1476061431421