n | a(n) |
---|---|
0 | 0 |
1 | 9 |
2 | 54 |
3 | 219 |
4 | 714 |
5 | 2001 |
6 | 5004 |
7 | 11439 |
8 | 24309 |
9 | 48619 |
10 | 92377 |
11 | 167959 |
12 | 293929 |
13 | 497419 |
14 | 817189 |
15 | 1307503 |
16 | 2042974 |
17 | 3124549 |
18 | 4686824 |
19 | 6906899 |
20 | 10015004 |
21 | 14307149 |
22 | 20160074 |
23 | 28048799 |
24 | 38567099 |
25 | 52451255 |
26 | 70607459 |
27 | 94143279 |
[0,9,54,219,714,2001,5004,11439,24309,48619,92377, 167959,293929,497419,817189,1307503,2042974, 3124549,4686824,6906899,10015004,14307149, 20160074,28048799,38567099,52451255,70607459, 94143279] |