# A026863 (b-file synthesized from sequence entry)
3 1
4 9
5 56
6 301
7 1504
8 7217
9 33821
10 156274
11 716116
12 3266558
13 14868789
14 67649170
15 307997855
16 1404343584
17 6416130302
18 29383457373
19 134915391509
20 621163581667
21 2867888163907
22 13278007815855
23 61645847283931
24 286977785803129