# A148704 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 7
4 23
5 73
6 255
7 895
8 3309
9 12311
10 47361
11 183183
12 724733
13 2881317
14 11647367
15 47278907
16 194370111
17 801915951
18 3341949461
19 13969919759
20 58876304081
21 248789702749
22 1058454456759
23 4513481955851
24 19357097166219
25 83185584301713
26 359242498536387
27 1554197478964649
28 6752629753488099