# A006360 (b-file synthesized from sequence entry)
0 1
1 50
2 887
3 8790
4 59542
5 307960
6 1301610
7 4701698
8 14975675
9 43025762
10 113414717
11 277904900
12 639562508
13 1393844960
14 2896063220
15 5768600412
16 11066514565
17 20526933442
18 36936277875
19 64660182026
20 110394412610