# A262784 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 3
4 7
5 18
6 51
7 147
8 431
9 1295
10 3954
11 12219
12 38174
13 120373
14 382559
15 1224173
16 3940964
17 12754732
18 41476011
19 135446194
20 444016332
21 1460619970
22 4819995330
23 15951789030
24 52932499724
25 176073789065
26 587010353666
27 1961118581900
28 6564548926877
29 22013613082514
30 73945428978360
31 248781470115309