n | a(n) |
---|---|
1 | 1 |
2 | 21 |
3 | 201 |
4 | 1076 |
5 | 4025 |
6 | 11901 |
7 | 29841 |
8 | 66256 |
9 | 134001 |
10 | 251725 |
11 | 445401 |
12 | 750036 |
13 | 1211561 |
14 | 1888901 |
15 | 2856225 |
16 | 4205376 |
17 | 6048481 |
18 | 8520741 |
19 | 11783401 |
20 | 16026900 |
21 | 21474201 |
22 | 28384301 |
23 | 37055921 |
24 | 47831376 |
25 | 61100625 |
26 | 77305501 |
27 | 96944121 |
[1,21,201,1076,4025,11901,29841,66256,134001, 251725,445401,750036,1211561,1888901,2856225, 4205376,6048481,8520741,11783401,16026900, 21474201,28384301,37055921,47831376,61100625, 77305501,96944121] |