# A020130 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 1
4 2
5 8
6 37
7 229
8 1648
9 13508
10 124269
11 1267543
12 14196478
13 173197025
14 2286200719
15 32464050200
16 493453563030
17 7993947721072
18 137495900802424
19 2502425394604114
20 48046567576398987
21 970540665043259526