# A089845 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 2 4 10 5 70 6 630 7 6930 8 90090 9 90090 10 1531530 11 29099070 12 29099070 13 669278610 14 3346393050 15 10039179150 16 291136195350 17 9025222055850 18 9025222055850 19 9025222055850 20 333933216066450