# A052255 (b-file synthesized from sequence entry)
0 1
1 13
2 81
3 345
4 1155
5 3267
6 8151
7 18447
8 38610
9 75790
10 140998
11 250614
12 428298
13 707370
14 1133730
15 1769394
16 2696727
17 4023459
18 5888575
19 8469175
20 11988405
21 16724565
22 23021505
23 31300425