# A058534 (b-file synthesized from sequence entry)
0 0
1 1
2 3
3 6
4 15
5 36
6 99
7 270
8 783
9 2298
10 6936
11 21204
12 65895
13 206862
14 656253
15 2098602
16 6761028
17 21917364
18 71450229
19 234070806
20 770216253
21 2544458592
22 8435990916
23 28060099692
24 93612265143
25 313153860210
26 1050194570445
27 3530080085868