# A026988 (b-file synthesized from sequence entry)
2 1
3 10
4 69
5 340
6 1696
7 8774
8 44500
9 203884
10 998953
11 5026154
12 24474925
13 110862660
14 540493911
15 2706193730
16 13062307900
17 59214077236
18 288140818097
19 1439810493778
20 6934754735653
21 31544380215556
22 153401000364266
23 765589966351344
24 3686304297844080
25 16830906540844256
26 81840064308561274