n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 9 |
4 | 34 |
5 | 97 |
6 | 373 |
7 | 1215 |
8 | 4768 |
9 | 16429 |
10 | 65917 |
11 | 237771 |
12 | 968122 |
13 | 3580933 |
14 | 14767182 |
15 | 55993927 |
16 | 232930254 |
17 | 896421657 |
18 | 3758595523 |
19 | 14693407001 |
20 | 61959876696 |
21 | 244614547867 |
22 | 1037022804734 |
23 | 4138819773135 |
24 | 17616327456336 |
25 | 70804442020279 |
26 | 302527380401375 |
27 | 1225683396052321 |
28 | 5252426395066506 |
[1,1,4,9,34,97,373,1215,4768,16429,65917,237771, 968122,3580933,14767182,55993927,232930254, 896421657,3758595523,14693407001,61959876696, 244614547867,1037022804734,4138819773135, 17616327456336,70804442020279,302527380401375, 1225683396052321,5252426395066506] |