# A070971 (b-file synthesized from sequence entry) 1 3 2 4 3 15 4 6 5 105 6 30 7 1155 8 770 9 36465 10 210 11 15015 12 6006 13 255255 14 2310 15 8580495 16 102102 17 4849845 18 72930 19 20056049013 20 74364290 21 5898837945 22 30030 23 3234846615 24 881790 25 195282582495 26 510510 27 218257003965 28 20281170 29 100280245065 30 17160990 31 934482952262145 32 6614136163635