# A324135 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 6
4 24
5 120
6 710
7 4815
8 36650
9 308778
10 2850294
11 28602468
12 310041806
13 3610879857
14 44975227466
15 596677473990
16 8401332033264
17 125140942951896
18 1966223504686334
19 32501786913873447
20 563877339150924866
21 10245134152041643818
22 194553155073687332550
23 3854328529787275833204