n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 4 |
3 | 9 |
4 | 20 |
5 | 35 |
6 | 66 |
7 | 105 |
8 | 176 |
9 | 270 |
10 | 420 |
11 | 616 |
12 | 924 |
13 | 1313 |
14 | 1890 |
15 | 2640 |
16 | 3696 |
17 | 5049 |
18 | 6930 |
19 | 9310 |
20 | 12540 |
21 | 16632 |
22 | 22044 |
23 | 28865 |
24 | 37800 |
25 | 48950 |
26 | 63336 |
27 | 81270 |
28 | 104104 |
29 | 132385 |
30 | 168120 |
31 | 212102 |
32 | 267168 |
33 | 334719 |
34 | 418540 |
35 | 520905 |
36 | 647172 |
37 | 800569 |
38 | 988570 |
39 | 1216215 |
40 | 1493520 |
[0,1,4,9,20,35,66,105,176,270,420,616,924,1313, 1890,2640,3696,5049,6930,9310,12540,16632,22044, 28865,37800,48950,63336,81270,104104,132385, 168120,212102,267168,334719,418540,520905,647172, 800569,988570,1216215,1493520] |