# A178937 (b-file synthesized from sequence entry) 1 1 2 2 3 4 4 7 5 12 6 20 7 35 8 58 9 101 10 172 11 300 12 509 13 888 14 1538 15 2683 16 4611 17 8033 18 13941 19 24236 20 41766 21 72504 22 125592 23 217563 24 374757 25 648378 26 1120243 27 1934800 28 3328622 29 5743517 30 9901009 31 17061027 32 29314809 33 50478219 34 86859244 35 149408560 36 256438542 37 440869300