# A002443 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 2
4 3
5 10
6 1382
7 420
8 10851
9 438670
10 7333662
11 51270780
12 7090922730
13 2155381956
14 94997844116
15 68926730208040
16 1780853160521127
17 541314450257070
18 52630543106106954746
19 15997766769574912140
20 10965474176850863126142
21 1003264444985926729776060
22 35069919669919290536128980