n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 4 |
3 | 21 |
4 | 64 |
5 | 321 |
6 | 1092 |
7 | 5461 |
8 | 16384 |
9 | 81921 |
10 | 278532 |
11 | 1392661 |
12 | 4210752 |
13 | 21053761 |
14 | 71582788 |
15 | 357913941 |
16 | 1073741824 |
17 | 5368709121 |
18 | 18253611012 |
19 | 91268055061 |
20 | 275951648832 |
21 | 1379758244161 |
22 | 4691178030148 |
23 | 23455890150741 |
[0,1,4,21,64,321,1092,5461,16384,81921,278532, 1392661,4210752,21053761,71582788,357913941, 1073741824,5368709121,18253611012,91268055061, 275951648832,1379758244161,4691178030148, 23455890150741] |