# A291420 (b-file synthesized from sequence entry)
1 341880
2 8168160
3 14636160
4 17957940
5 52492440
6 116396280
7 1071572040
8 1187525640
9 1728483120
10 5988702720
11 6609482880
12 22539095040
13 29239970760
14 136496680320
15 258670630680
16 398648544840
17 494892478080
18 592003418160
19 1329673884000
20 1343798407560
21 2190884461920