# A019498 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 1
4 4
5 10
6 20
7 47
8 128
9 340
10 868
11 2275
12 6188
13 16922
14 46112
15 126613
16 351568
17 981622
18 2747876
19 7723250
20 21811856
21 61828886
22 175752728
23 500984606
24 1432111244
25 4104175970
26 11787811340
27 33926475162
28 97837209036
29 282662156478
30 818022923184
31 2371103693427