n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 30 |
3 | 70 |
4 | 315 |
5 | 693 |
6 | 12012 |
7 | 25740 |
8 | 109395 |
9 | 230945 |
10 | 1939938 |
11 | 4056234 |
12 | 16900975 |
13 | 35102025 |
14 | 1163381400 |
15 | 2404321560 |
16 | 9917826435 |
17 | 20419054425 |
18 | 167890003050 |
19 | 344616322050 |
20 | 1412926920405 |
21 | 2893136075115 |
22 | 47342226683700 |
23 | 96742811049300 |
24 | 395033145117975 |
[1,3,30,70,315,693,12012,25740,109395,230945, 1939938,4056234,16900975,35102025,1163381400, 2404321560,9917826435,20419054425,167890003050, 344616322050,1412926920405,2893136075115, 47342226683700,96742811049300,395033145117975] |