# A159557 (b-file synthesized from sequence entry)
3 4
4 6
5 26
6 80
7 246
8 810
9 2704
10 9252
11 32066
12 112720
13 400024
14 1432860
15 5170604
16 18784170
17 68635478
18 252088496
19 930138522
20 3446167860
21 12815663844
22 47820447028
23 178987624514
24 671825133648
25 2528212128776
26 9536895064400