# A011753 (b-file synthesized from sequence entry)
1 11
2 20
3 30
4 420
5 5460
6 60060
7 746130
8 80059980
9 900029130
10 10407767370
11 1100869379610
12 12026713528830
13 1300912477633230
14 14299762385778870
15 1502172599891453490
16 160000041334479776430
17 17000158733027932351890