n | a(n) |
---|---|
1 | -1 |
2 | 3 |
3 | 15 |
4 | 40 |
5 | 84 |
6 | 154 |
7 | 258 |
8 | 405 |
9 | 605 |
10 | 869 |
11 | 1209 |
12 | 1638 |
13 | 2170 |
14 | 2820 |
15 | 3604 |
16 | 4539 |
17 | 5643 |
18 | 6935 |
19 | 8435 |
20 | 10164 |
21 | 12144 |
22 | 14398 |
23 | 16950 |
24 | 19825 |
25 | 23049 |
26 | 26649 |
27 | 30653 |
28 | 35090 |
29 | 39990 |
30 | 45384 |
31 | 51304 |
32 | 57783 |
33 | 64855 |
34 | 72555 |
[-1,3,15,40,84,154,258,405,605,869,1209,1638,2170, 2820,3604,4539,5643,6935,8435,10164,12144,14398, 16950,19825,23049,26649,30653,35090,39990,45384, 51304,57783,64855,72555] |