n | a(n) |
---|---|
0 | 3 |
1 | 0 |
2 | 14 |
3 | 21 |
4 | 98 |
5 | 245 |
6 | 833 |
7 | 2401 |
8 | 7546 |
9 | 22638 |
10 | 69629 |
11 | 211288 |
12 | 645869 |
13 | 1966419 |
14 | 6000099 |
15 | 18286016 |
16 | 55765626 |
17 | 170002805 |
18 | 518361494 |
19 | 1580379017 |
20 | 4818550093 |
21 | 14691183577 |
22 | 44792503770 |
23 | 136568135690 |
24 | 416385811429 |
25 | 1269524476220 |
26 | 3870677629833 |
27 | 11801372013543 |
28 | 35981414742371 |
29 | 109704347503632 |
30 | 334479507291398 |
[3,0,14,21,98,245,833,2401,7546,22638,69629, 211288,645869,1966419,6000099,18286016,55765626, 170002805,518361494,1580379017,4818550093, 14691183577,44792503770,136568135690,416385811429, 1269524476220,3870677629833,11801372013543, 35981414742371,109704347503632,334479507291398] |