# A047035 (b-file synthesized from sequence entry)
3 1
4 2
5 4
6 22
7 100
8 421
9 1730
10 7000
11 28056
12 111754
13 443444
14 1755310
15 6937216
16 27389041
17 108067718
18 426244160
19 1680912060
20 6628454969
21 26139689490
22 103095008914
23 406671627876
24 1604475043425
25 6331612489122
26 24991603082792