# A148964 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 9
4 31
5 105
6 380
7 1424
8 5451
9 21236
10 84023
11 336837
12 1366529
13 5597986
14 23129943
15 96272760
16 403427906
17 1701008029
18 7211480972
19 30724854989
20 131497271065
21 565125754561
22 2438042909441
23 10555465139832
24 45849803838254
25 199765279212025
26 872844372120064
27 3823935236078622
28 16794571990271903