# A227377 (b-file synthesized from sequence entry) 0 1 1 2 2 4 3 9 4 14 5 27 6 46 7 71 8 113 9 185 10 280 11 409 12 614 13 899 14 1325 15 1892 16 2639 17 3717 18 5216 19 7221 20 9990 21 13600 22 18315 23 24705 24 33190 25 44338 26 58998 27 78151 28 102492 29 133963 30 174840 31 227180 32 294463 33 380480 34 489606 35 628157 36 801699 37 1019864 38 1295760 39 1641900 40 2074523