n | a(n) |
---|---|
0 | 1 |
1 | 9 |
2 | 51 |
3 | 219 |
4 | 786 |
5 | 2466 |
6 | 6974 |
7 | 18126 |
8 | 43929 |
9 | 100321 |
10 | 217683 |
11 | 451707 |
12 | 901128 |
13 | 1735752 |
14 | 3239928 |
15 | 5878328 |
16 | 10393902 |
17 | 17950878 |
18 | 30340682 |
19 | 50273658 |
20 | 81787476 |
21 | 130811124 |
22 | 205935756 |
23 | 319456044 |
24 | 488764246 |
25 | 738197766 |
26 | 1101468114 |
27 | 1624826306 |
28 | 2371158504 |
29 | 3425244456 |
[1,9,51,219,786,2466,6974,18126,43929,100321, 217683,451707,901128,1735752,3239928,5878328, 10393902,17950878,30340682,50273658,81787476, 130811124,205935756,319456044,488764246,738197766, 1101468114,1624826306,2371158504,3425244456] |