# A024422 (b-file synthesized from sequence entry)
1 1
2 2
3 3
4 6
5 12
6 26
7 62
8 161
9 448
10 1338
11 4274
12 14524
13 52289
14 198678
15 794065
16 3328482
17 14594217
18 66779091
19 318205958
20 1575994324
21 8098891289
22 43115440260
23 237435483669
24 1350777074576
25 7928871324300
26 47965914249016
27 298735745451523