n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 21 |
3 | 231 |
4 | 1540 |
5 | 7260 |
6 | 26796 |
7 | 82621 |
8 | 222111 |
9 | 536130 |
10 | 1186570 |
11 | 2445366 |
12 | 4747821 |
13 | 8763391 |
14 | 15487395 |
15 | 26357430 |
16 | 43398586 |
17 | 69401871 |
18 | 108140571 |
19 | 164629585 |
20 | 245433090 |
21 | 359026206 |
22 | 516216646 |
23 | 730632651 |
24 | 1019283825 |
25 | 1403201800 |
26 | 1908167976 |
27 | 2565535896 |
28 | 3413156131 |
[0,1,21,231,1540,7260,26796,82621,222111,536130, 1186570,2445366,4747821,8763391,15487395,26357430, 43398586,69401871,108140571,164629585,245433090, 359026206,516216646,730632651,1019283825, 1403201800,1908167976,2565535896,3413156131] |