n | a(n) |
---|---|
1 | 3 |
2 | 26 |
3 | 153 |
4 | 615 |
5 | 1953 |
6 | 5281 |
7 | 12686 |
8 | 27805 |
9 | 56624 |
10 | 108549 |
11 | 197804 |
12 | 345216 |
13 | 580452 |
14 | 944778 |
15 | 1494415 |
16 | 2304572 |
17 | 3474241 |
18 | 5131844 |
19 | 7441827 |
20 | 10612301 |
21 | 14903835 |
22 | 20639511 |
23 | 28216356 |
24 | 38118271 |
25 | 50930582 |
26 | 67356343 |
27 | 88234526 |
28 | 114560238 |
[3,26,153,615,1953,5281,12686,27805,56624,108549, 197804,345216,580452,944778,1494415,2304572, 3474241,5131844,7441827,10612301,14903835, 20639511,28216356,38118271,50930582,67356343, 88234526,114560238] |