# A154559 (b-file synthesized from sequence entry) 1 1 2 2 3 0 4 3 5 2 6 0 7 4 8 6 9 4 10 0 11 5 12 12 13 16 14 9 15 0 16 6 17 20 18 40 19 45 20 21 21 0 22 7 23 30 24 80 25 135 26 126 27 51 28 0 29 8 30 42 31 140 32 315 33 441 34 357 35 127 36 0 37 9 38 56 39 224 40 630 41 1176 42 1428 43 1016 44 323 45 0 46 10 47 72 48 336 49 1134 50 2646 51 4284 52 4572 53 2907 54 835 55 0