# A057704 (b-file synthesized from sequence entry) 1 2 2 3 3 5 4 6 5 13 6 24 7 66 8 68 9 167 10 287 11 310 12 352 13 564 14 590 15 620 16 849 17 1552 18 1849 19 67132 20 85586 21 234725