# A077851 (b-file synthesized from sequence entry) 0 1 1 3 2 7 3 17 4 41 5 97 6 229 7 541 8 1277 9 3013 10 7109 11 16773 12 39573 13 93365 14 220277 15 519701 16 1226133 17 2892821 18 6825045 19 16102357 20 37990357 21 89630805 22 211466325 23 498913365 24 1177088341 25 2777109333 26 6552045397 27 15458267477 28 36470753621 29 86045598037 30 203007731029