# A027294 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 20
4 56
5 208
6 493
7 1974
8 4336
9 18258
10 38380
11 167464
12 342056
13 1532376
14 3067156
15 14022168
16 27646080
17 128438893
18 250291902
19 1178090212
20 2274524200
21 10822168448
22 20736353110
23 99564168884
24 189575748320
25 917316990660