# A234336 (b-file synthesized from sequence entry)
1 0
2 1
3 45
4 153
5 325
6 10440
7 1385280
8 2530125
9 145462096
10 253472356000
11 896473314291600
12 18598323060963360
13 4923539323344237960
14 27021247523935843321
15 1779312917089890560241
16 2355054824151326520405
17 21328127890911040269960
18 124797500891024855239125