# A056348 (b-file synthesized from sequence entry) 1 0 2 1 3 2 4 3 5 6 6 8 7 16 8 24 9 42 10 69 11 124 12 208 13 378 14 668 15 1214 16 2220 17 4110 18 7630 19 14308 20 26931 21 50944 22 96782 23 184408 24 352450 25 675180 26 1296477 27 2493680 28 4805388 29 9272778 30 17919558 31 34669600