# A083873 (b-file synthesized from sequence entry)
1 20
2 70
3 272
4 550
5 945
6 1575
7 3465
8 15015
9 47025
10 81081
11 153153
12 692835
13 1851759
14 3633903
15 6084351
16 22309287
17 95009481
18 131339637
19 277272567
20 1321122231
21 1516844043
22 5391411025
23 28816162375
24 40342627325
25 181667110625
26 186096635725
27 213239601575