# A056321 (b-file synthesized from sequence entry)
1 0
2 0
3 0
4 0
5 60
6 900
7 8400
8 63000
9 417120
10 2551500
11 14804700
12 82764000
13 450518460
14 2404502100
15 12646078140
16 65771433000
17 339165516120
18 1737485731740
19 8855359634100
20 44952365429940
21 227475768899460