n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 4 |
4 | 10 |
5 | 25 |
6 | 80 |
7 | 277 |
8 | 1150 |
9 | 5291 |
10 | 26918 |
11 | 145744 |
12 | 828856 |
13 | 4872771 |
14 | 29395784 |
15 | 180857382 |
16 | 1130700488 |
17 | 7163245811 |
18 | 45895629266 |
19 | 296937363511 |
20 | 1937625709854 |
21 | 12739784808937 |
22 | 84331837321404 |
23 | 561647630439975 |
24 | 3761221057579892 |
[1,2,4,10,25,80,277,1150,5291,26918,145744,828856, 4872771,29395784,180857382,1130700488,7163245811, 45895629266,296937363511,1937625709854, 12739784808937,84331837321404,561647630439975, 3761221057579892] |