# A056993 (b-file synthesized from sequence entry) 0 2 1 2 2 2 3 2 4 2 5 30 6 102 7 120 8 278 9 46 10 824 11 150 12 1534 13 30406 14 67234 15 70906 16 48594 17 62722 18 24518 19 75898 20 919444