# A143981 (b-file synthesized from sequence entry) 1 1 2 3 3 6 4 9 5 15 6 19 7 26 8 36 9 46 10 59 11 80 12 100 13 128 14 167 15 211 16 267 17 341 18 429 19 541 20 682 21 850 22 1063 23 1327 24 1647 25 2035 26 2520 27 3100 28 3810 29 4669 30 5708 31 6955 32 8468 33 10267 34 12441 35 15026 36 18120 37 21788 38 26175 39 31355 40 37510 41 44769 42 53362 43 63460 44 75384 45 89348