# A153916 (b-file synthesized from sequence entry)
0 1
1 2
2 1
3 1
4 2
5 2
6 3
7 6
8 7
9 14
10 21
11 38
12 56
13 157
14 218
15 502
16 1201
17 2460
18 4784
19 17658
20 30630
21 97836
22 276873
23 784468
24 1952042
25 9254403
26 20443559
27 84386183
28 315136918
29 1139402048
30 3692342904