# A069161 (b-file synthesized from sequence entry) 1 2 2 3 3 5 4 7 5 11 6 13 7 15 8 17 9 19 10 23 11 29 12 31 13 33 14 35 15 37 16 41 17 43 18 45 19 47 20 51 21 53 22 59 23 61