# A149989 (b-file synthesized from sequence entry)
0 1
1 2
2 5
3 17
4 57
5 207
6 765
7 2881
8 11179
9 43677
10 173480
11 693553
12 2797983
13 11382137
14 46538292
15 191449223
16 790709157
17 3281073206
18 13667322149
19 57117349582
20 239451649152
21 1006502550212
22 4242216990195
23 17921591400135
24 75873336597512
25 321854231610450
26 1367802823437628
27 5823075621825059