# A068763 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 2 4 2 5 5 6 6 7 1 8 14 9 20 10 6 11 42 12 70 13 30 14 2 15 132 16 252 17 140 18 20 19 429 20 924 21 630 22 140 23 5 24 1430 25 3432 26 2772 27 840 28 70 29 4862 30 12870 31 12012 32 4620 33 630 34 14 35 16796 36 48620 37 51480 38 24024 39 4620 40 252 41 58786 42 184756 43 218790