# A129331 (b-file synthesized from sequence entry)
0 0
1 1
2 8
3 60
4 464
5 3780
6 32568
7 296492
8 2845088
9 28695060
10 303334920
11 3351877628
12 38622668400
13 463036981732
14 5764038605528
15 74365952622540
16 992720923710272
17 13690497077256628
18 194777994524434344
19 2855149354656290716