# A020589 (b-file synthesized from sequence entry) 1 5 2 7 3 11 4 13 5 17 6 19 7 23 8 29 9 31 10 41 11 47 12 59 13 61 14 71 15 73 16 79 17 127 18 137 19 167 20 191 21 239