# A089300 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 4 4 9 5 13 6 25 7 33 8 56 9 76 10 122 11 170 12 264 13 360 14 538 15 707 16 1002 17 1332 18 1853 19 2409 20 3294