# A138354 (b-file synthesized from sequence entry)
0 1
1 0
2 3
3 1
4 21
5 26
6 215
7 498
8 2821
9 9040
10 43695
11 165375
12 752785
13 3101970
14 13881803
15 59837183
16 267860685
17 1184749704
18 5337504263
19 23996776941
20 108964583121
21 495544446410
22 2267450194443
23 10402298479276
24 47926692348121