# A028472 (b-file synthesized from sequence entry)
0 1
1 1
2 89
3 571
4 18061
5 185921
6 4213133
7 53175517
8 1031151241
9 14479521761
10 258584046368
11 3852472573499
12 65743732590821
13 1012747193318519
14 16848161392724969
15 264499788583572499
16 4337452956682508609
17 68829675768134027209
18 1119577238373960926141