# A183073 (b-file synthesized from sequence entry) 1 2 2 3 3 5 4 7 5 13 6 17 7 19 8 31 9 43 10 61 11 79 12 89 13 107 14 127 15 193 16 311 17 331 18 349 19 389 20 521 21 557 22 577 23 607 24 631 25 647 26 1103