# A159965 (b-file synthesized from sequence entry) 0 1 1 2 2 1 3 6 4 5 5 1 6 20 7 21 8 8 9 1 10 70 11 84 12 45 13 11 14 1 15 252 16 330 17 220 18 78 19 14 20 1 21 924 22 1287 23 1001 24 455 25 120 26 17 27 1 28 3432 29 5005 30 4368 31 2380 32 816 33 171 34 20 35 1 36 12870 37 19448 38 18564 39 11628 40 4845 41 1330 42 231 43 23 44 1 45 48620 46 75582 47 77520 48 54264 49 26334 50 8855 51 2024 52 300 53 26 54 1