# A122229 (b-file synthesized from sequence entry)
0 0
1 2
2 12
3 56
4 228
5 920
6 3684
7 14744
8 58980
9 235928
10 943716
11 3774872
12 15099492
13 60397976
14 241591908
15 966367640
16 3865470564
17 15461882264
18 61847529060
19 247390116248
20 989560464996
21 3958241859992
22 15832967439972