# A054144 (b-file synthesized from sequence entry) 0 0 1 1 2 1 3 2 4 3 5 7 6 3 7 5 8 14 9 36 10 4 11 7 12 21 13 60 14 164 15 5 16 9 17 28 18 84 19 246 20 700 21 6 22 11 23 35 24 108 25 328 26 980 27 2868 28 7 29 13 30 42 31 132 32 410 33 1260 34 3824 35 11424 36 8 37 15 38 49 39 156 40 492 41 1540 42 4780 43 14688 44 44576 45 9 46 17 47 56 48 180 49 574 50 1820 51 5736 52 17952 53 55720 54 171216