# A068199 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 24
4 114
5 618
6 3732
7 24702
8 177126
9 1363740
10 11195286
11 97437138
12 894857712
13 8637708858
14 87333790686
15 922203924216
16 10144109299146
17 115972625504994
18 1375221840671220
19 16884112119546534
20 214270296662325534
21 2806600053170775372
22 37892025089041181982