n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 30 |
3 | 146 |
4 | 517 |
5 | 1476 |
6 | 3614 |
7 | 7890 |
8 | 15761 |
9 | 29332 |
10 | 51526 |
11 | 86274 |
12 | 138725 |
13 | 215476 |
14 | 324822 |
15 | 477026 |
16 | 684609 |
17 | 962660 |
18 | 1329166 |
19 | 1805362 |
20 | 2416101 |
21 | 3190244 |
22 | 4161070 |
23 | 5366706 |
24 | 6850577 |
25 | 8661876 |
26 | 10856054 |
27 | 13495330 |
28 | 16649221 |
29 | 20395092 |
30 | 24818726 |
[1,4,30,146,517,1476,3614,7890,15761,29332,51526, 86274,138725,215476,324822,477026,684609,962660, 1329166,1805362,2416101,3190244,4161070,5366706, 6850577,8661876,10856054,13495330,16649221, 20395092,24818726] |