# A074890 (b-file synthesized from sequence entry)
0 1
1 3
2 6
3 13
4 25
5 55
6 100
7 222
8 401
9 891
10 1602
11 3559
12 6428
13 14258
14 25647
15 56936
16 102860
17 228154
18 410339
19 910998
20 1645813
21 3650437
22 6565453
23 14576121
24 26332935
25 58407052
26 105047514
27 233217299
28 421327294
29 934513441
30 1680759539