# A026973 (b-file synthesized from sequence entry)
2 1
3 8
4 52
5 224
6 1131
7 4620
8 23456
9 92752
10 460170
11 1805760
12 8946216
13 34942176
14 172593267
15 673129380
16 3323413216
17 12954246368
18 63944790462
19 249263001360
20 1230668687000
21 4798770328960
22 23700302314238
23 92457112946968
24 456814709763456
25 1782991313610720
26 8813232700137268