# A028221 (b-file synthesized from sequence entry)
0 1
1 36
2 817
3 14964
4 241969
5 3609732
6 50945329
7 691013268
8 9103047217
9 117325825188
10 1487325837361
11 18617531653812
12 230789841098545
13 2839613067896004
14 34737008397752113
15 423047207066166996