# A149438 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 13
4 46
5 176
6 695
7 2798
8 11541
9 48329
10 204881
11 878391
12 3799793
13 16563455
14 72690310
15 320873735
16 1423746623
17 6346395953
18 28405424089
19 127608745990
20 575191857966
21 2600559447692
22 11790420847829
23 53592033693935
24 244169858261095
25 1114878235708232
26 5100790807227090
27 23380879976226249