# A014530 (b-file synthesized from sequence entry) 1 2 2 4 3 6 4 7 5 8 6 9 7 11 8 15 9 16 10 17 11 18 12 19 13 24 14 25 15 27 16 29 17 33 18 35 19 37 20 42 21 50