# A149704 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 17
4 69
5 283
6 1221
7 5331
8 23769
9 107001
10 487945
11 2243869
12 10383885
13 48373479
14 226576711
15 1065750707
16 5033216081
17 23855847143
18 113417165091
19 540703865905
20 2584161705411
21 12378567019955
22 59416802743749
23 285720955143715
24 1376328518631083
25 6640284560512583
26 32082470803999035
27 155212758424395955