# A026270 (b-file synthesized from sequence entry)
2 1
3 2
4 6
5 15
6 39
7 102
8 270
9 721
10 1941
11 5262
12 14354
13 39372
14 108528
15 300482
16 835278
17 2330334
18 6522882
19 18313542
20 51559506
21 145530291
22 411738723
23 1167450066
24 3316925794
25 9441771081
26 26923831029
27 76901809810
28 219992462862
29 630245628681
30 1808029517585