# A126409 (b-file synthesized from sequence entry)
0 1
1 22
2 104
3 500
4 2418
5 11736
6 57098
7 278274
8 1357980
9 6633780
10 32433110
11 158676010
12 776746680
13 3804116478
14 18638153276
15 91348350296
16 447842953212
17 2196139279248
18 10771787471680
19 52844083573174
20 259283266049208