n | a(n) |
---|---|
0 | 1 |
1 | 30 |
2 | 420 |
3 | 3450 |
4 | 18930 |
5 | 77190 |
6 | 253140 |
7 | 705090 |
8 | 1732020 |
9 | 3852990 |
10 | 7912380 |
11 | 15214650 |
12 | 27692310 |
13 | 48110790 |
14 | 80313900 |
15 | 129513570 |
16 | 202627560 |
17 | 308668830 |
18 | 459190260 |
19 | 668788410 |
20 | 955670010 |
21 | 1342284870 |
22 | 1856028900 |
23 | 2530020930 |
24 | 3403957020 |
25 | 4525045950 |
26 | 5949029580 |
[1,30,420,3450,18930,77190,253140,705090,1732020, 3852990,7912380,15214650,27692310,48110790, 80313900,129513570,202627560,308668830,459190260, 668788410,955670010,1342284870,1856028900, 2530020930,3403957020,4525045950,5949029580] |