# A059271 (b-file synthesized from sequence entry)
0 0
1 1
2 3
3 15
4 82
5 485
6 3039
7 19862
8 133969
9 925805
10 6521690
11 46658955
12 338115321
13 2476585674
14 18306446887
15 136384608971
16 1023041170426
17 7720127405881
18 58567844563843
19 446422706023630
20 3417223098702669
21 26257867836211825