# A058823 (b-file synthesized from sequence entry)
0 1
1 8
2 36
3 344
4 3088
5 26216
6 218548
7 1797560
8 14680576
9 119304704
10 966370924
11 7809031448
12 62992875856
13 507466905128
14 4083900481540
15 32838747285128
16 263882791714816
17 2119341001115528
18 17013598599759616
19 136530178177126616
20 1095275429430191920
21 8784163844623695896