# A217666 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 9
4 43
5 198
6 903
7 4121
8 18840
9 86255
10 395397
11 1814662
12 8337729
13 38350063
14 176574336
15 813785593
16 3753980313
17 17332179596
18 80089232683
19 370370470791
20 1714045215632
21 7938075605697
22 36787429315319
23 170592514889814
24 791557946825363
25 3674974608196665