# A148071 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 4 4 9 5 21 6 51 7 143 8 374 9 1071 10 3095 11 8934 12 26170 13 77812 14 239576 15 719583 16 2245728 17 7027771 18 21874554 19 68780246 20 217957471 21 699596665 22 2221050242 23 7204830752 24 23364983444 25 75490995551 26 245743450650 27 803146080439 28 2641243592039 29 8638752159115 30 28638848337491 31 94831340109958 32 313328526209055