# A369135 (b-file synthesized from sequence entry)
0 1
1 6
2 30
3 420
4 630
5 13860
6 180180
7 5405400
8 4594590
9 96996900
10 1222160940
11 40156716600
12 6692786100
13 281097016200
14 1164544781400
15 72201776446800
16 2084826294901350
17 1895296631728500
18 222622144044300
19 1823275359722817000
20 575032998066426900
21 129519337183533297000