# A099513 (b-file synthesized from sequence entry)
0 1
1 4
2 8
3 27
4 89
5 257
6 784
7 2421
8 7336
9 22324
10 68147
11 207549
12 632177
13 1926608
14 5870089
15 17884476
16 54493120
17 166034731
18 505883825
19 1541369745
20 4696373312
21 14309268413
22 43598614528
23 132839740908
24 404746601923
25 1233213978037