# A000516 (b-file synthesized from sequence entry)
1 0
2 0
3 0
4 0
5 1
6 1
7 4
8 51
9 3529
10 601055
11 156473848
12 54062069505
13 23869437984682
14 13186966476208771
15 8971034249976338907
16 7414924597575224629299
17 7360058177440420943520750
18 8683626883245180573511018830
19 12066478410398147578519948851818
20 19585444567548740264243478805318202