# A058818 (b-file synthesized from sequence entry)
0 1
1 3
2 6
3 19
4 63
5 195
6 613
7 1875
8 5751
9 17499
10 53169
11 161043
12 487221
13 1471683
14 4441485
15 13392331
16 40356711
17 121543683
18 365898261
19 1101089811
20 3312448137
21 9962241251
22 29954655861
23 90049997139
24 270661661541
25 813397065075
26 2444101819329
27 7343167949235