# A045633 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 2
4 5
5 12
6 31
7 84
8 250
9 762
10 2504
11 8358
12 28928
13 101339
14 361184
15 1297864
16 4707712
17 17179434
18 63068079
19 232615770
20 861723271
21 3204236692
22 11955827898
23 44748176652
24 167959114814
25 632058070297
26 2384234976235
27 9013628450510