# A157405 (b-file synthesized from sequence entry) 0 1 1 1 2 5 3 1 4 15 5 55 6 1 7 105 8 220 9 935 10 1 11 425 12 3300 13 4675 14 21505 15 1 16 3075 17 47850 18 84150 19 129030 20 623645 21 1 22 15855 23 415800 24 2323475 25 2709630 26 4365515 27 415800 28 2323475 29 2709630 30 4365515 31 21827575 32 1 33 123515 34 6394080 35 51934575