# A038149 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 5 4 10 5 22 6 51 7 111 8 256 9 594 10 1324 11 3130 12 7285 13 16435 14 39430 15 91959 16 211519 17 506408 18 1182650 19 2760810 20 6592080 21 15409740 22 36369225 23 86666790 24 202738635 25 482548825 26 1148125550 27 2687285975 28 6439167735 29 15301850850 30 35843163720