# A143551 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 29
4 196
5 1781
6 14000
7 139234
8 1176340
9 12283166
10 108258380
11 1165438808
12 10561185568
13 116096795195
14 1072964739264
15 11975785105572
16 112313638368948
17 1268177365551626
18 12029082865935512
19 137067430786661911