# A177746 (b-file synthesized from sequence entry) 1 2 2 3 3 13 4 23 5 97 6 101 7 103 8 109 9 131 10 457 11 641 12 677 13 751 14 787 15 811 16 881 17 977 18 1019 19 1049 20 2719 21 2753 22 2777 23 2909 24 3067 25 3083 26 3203 27 3329 28 3331 29 3547 30 3557 31 3613 32 3767 33 3823 34 3833 35 3847 36 3911 37 3929 38 4007 39 4159 40 4219 41 4259 42 4327 43 4421 44 4591 45 4639