# A212421 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 6
4 17
5 42
6 118
7 320
8 861
9 2442
10 6658
11 18686
12 52100
13 146832
14 410990
15 1161722
16 3282403
17 9283968
18 26336598
19 74712158
20 212613094
21 605118528
22 1726261816
23 4926677982
24 14079210098
25 40247549662
26 115175011608
27 329707161766
28 944566633454
29 2707713181042