# A027201 (b-file synthesized from sequence entry)
0 1
1 2
2 11
3 52
4 269
5 1380
6 7333
7 37772
8 203145
9 1044234
10 5643127
11 28956878
12 156801451
13 803721390
14 4356085375
15 22313412784
16 120988175101
17 619498949770
18 3359774186871
19 17198982565682
20 93286822081343
21 477471877247444
22 2589948726805741
23 13254933617607980