# A273418 (b-file synthesized from sequence entry)
0 1
1 4
2 41
3 217
4 953
5 3961
6 16121
7 65017
8 261113
9 1046521
10 4190201
11 16769017
12 67092473
13 268402681
14 1073676281
15 4294836217