# A351972 (b-file synthesized from sequence entry) 0 1 1 2 2 3 3 6 4 11 5 21 6 40 7 78 8 151 9 294 10 572 11 1115 12 2172 13 4234 14 8252 15 16088 16 31361 17 61140 18 119191 19 232370 20 453010 21 883167 22 1721768 23 3356675 24 6543988 25 12757830 26 24871992 27 48489172 28 94531974 29 184294706 30 359291464 31 700456240 32 1365573493 33 2662252082 34 5190190005