n | a(n) |
---|---|
0 | 1 |
1 | 36 |
2 | 540 |
3 | 4950 |
4 | 32670 |
5 | 169884 |
6 | 736164 |
7 | 2760615 |
8 | 9202050 |
9 | 27810640 |
10 | 77364144 |
11 | 200443464 |
12 | 488259720 |
13 | 1126753200 |
14 | 2478857040 |
15 | 5226256926 |
16 | 10606227291 |
17 | 20796524100 |
18 | 39525557500 |
19 | 73018266750 |
20 | 131432880150 |
21 | 231003243900 |
22 | 397179490500 |
23 | 669161098125 |
24 | 1106346348900 |
[1,36,540,4950,32670,169884,736164,2760615, 9202050,27810640,77364144,200443464,488259720, 1126753200,2478857040,5226256926,10606227291, 20796524100,39525557500,73018266750,131432880150, 231003243900,397179490500,669161098125, 1106346348900] |