# A281991 (b-file synthesized from sequence entry) 1 1 2 4 3 5 4 7 5 16 6 17 7 19 8 28 9 59 10 68 11 128 12 307 13 343 14 368 15 421 16 448 17 469 18 691 19 1949 20 2506 21 4868 22 6914 23 30025 24 30955 25 35522 26 43388 27 45716 28 49999 29 76309 30 80149