# A048133 (b-file synthesized from sequence entry)
0 2
1 6
2 8
3 14
4 26
5 62
6 134
7 393
8 1257
9 4659
10 9314
11 27933
12 167073
13 334142
14 4677862
15 14033577
16 56134292
17 2133102298
18 11788191218
19 52541651594