# A084711 (b-file synthesized from sequence entry) 1 1 2 7 3 21 4 147 5 1393 6 2569 7 7525 8 13748 9 30171 10 43491 11 100639 12 123456 13 224175 14 296991 15 495367 16 658684 17 1013008 18 1438440 19 1954357 20 2310462 21 3813903 22 4092029 23 5916929 24 6974592 25 10276475 26 10989267 27 14919105 28 21957309 29 26812232 30 36865003