# A194588 (b-file synthesized from sequence entry) 0 1 1 0 2 2 3 2 4 8 5 17 6 49 7 128 8 356 9 983 10 2759 11 7779 12 22087 13 63000 14 180478 15 518846 16 1496236 17 4326383 18 12539335 19 36419069 20 105971473 21 308866226 22 901573732 23 2635235789 24 7712078755 25 22594899002 26 66266698424 27 194531585078 28 571561286576 29 1680679630089 30 4945738222801