# A143019 (b-file synthesized from sequence entry) 0 1 1 1 2 6 3 1 4 7 5 30 6 1 7 8 8 38 9 140 10 1 11 9 12 47 13 187 14 630 15 1 16 10 17 57 18 244 19 874 20 2772 21 1 22 11 23 68 24 312 25 1186 26 3958 27 12012 28 1 29 12 30 80 31 392 32 1578 33 5536 34 17548 35 51480 36 1 37 13 38 93 39 485 40 2063 41 7599 42 25147 43 76627 44 218790 45 1 46 14 47 107 48 592 49 2655 50 10254 51 35401 52 112028 53 330818