# A378883 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 24
4 171
5 1338
6 11109
7 96100
8 856762
9 7816616
10 72627241
11 684859147
12 6537520290
13 63050669143
14 613441446154
15 6013687144000
16 59343220508344
17 589004488233064
18 5876204912724812
19 58893312496308755
20 592682966496901253
21 5986771171677305889
22 60677419447552591497