# A005438 (b-file synthesized from sequence entry)
1 1
2 1
3 5
4 10
5 56
6 178
7 1202
8 5296
9 42272
10 238816
11 2204480
12 15214480
13 159575936
14 1301989648
15 15299174672
16 144118832896
17 1875796977152
18 20040052293376
19 286222128454400
20 3419989086092800
21 53183132405282816
22 702831038438522368