# A281156 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 19
4 54
5 165
6 467
7 1317
8 3599
9 9687
10 25519
11 66203
12 169254
13 426750
14 1062950
15 2616818
16 6373911
17 15369774
18 36716706
19 86939235
20 204152395
21 475631501
22 1099874363
23 2525418842
24 5759549109
25 13050991205
26 29391523405
27 65801951770
28 146486952644
29 324340095729
30 714389015139