# A335069 (b-file synthesized from sequence entry) 1 1 2 2 3 6 4 30 5 210 6 2310 7 30030 8 120120 9 690690 10 1021020 11 2042040 12 4084080 13 9699690 14 58198140 15 96996900 16 106696590 17 223092870 18 892371480 19 6469693230 20 6915878970 21 19409079690 22 32348466150 23 71166625530 24 200560490130 25 7420738134810 26 8624101075590