# A337992 (b-file synthesized from sequence entry)
0 1
1 10
2 70
3 448
4 2786
5 17140
6 104938
7 640720
8 3904738
9 23762140
10 144429770
11 876959896
12 5319995474
13 32247562084
14 195332428970
15 1182430057888
16 7153644523970
17 43256701913260
18 261441118446154
19 1579452451096168
20 9538212470700466
21 57579647214814900
22 347476026056519210