n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 16 |
3 | 62 |
4 | 239 |
5 | 920 |
6 | 3544 |
7 | 13672 |
8 | 52834 |
9 | 204528 |
10 | 793092 |
11 | 3080226 |
12 | 11980667 |
13 | 46662704 |
14 | 181971248 |
15 | 710454896 |
16 | 2776717742 |
17 | 10863073784 |
18 | 42537035408 |
19 | 166704021596 |
20 | 653827252022 |
21 | 2566222449104 |
22 | 10079023179536 |
23 | 39611016586832 |
[1,4,16,62,239,920,3544,13672,52834,204528,793092, 3080226,11980667,46662704,181971248,710454896, 2776717742,10863073784,42537035408,166704021596, 653827252022,2566222449104,10079023179536, 39611016586832] |