n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 22 |
4 | 130 |
5 | 791 |
6 | 4900 |
7 | 30738 |
8 | 194634 |
9 | 1241383 |
10 | 7963384 |
11 | 51325352 |
12 | 332095816 |
13 | 2155894508 |
14 | 14035149748 |
15 | 91593941402 |
16 | 599021799242 |
17 | 3924954250975 |
18 | 25760310654100 |
19 | 169322682857430 |
20 | 1114452091832130 |
21 | 7344021912458295 |
22 | 48448974411575280 |
23 | 319942093205166840 |
24 | 2114743632331515480 |
[1,4,22,130,791,4900,30738,194634,1241383,7963384, 51325352,332095816,2155894508,14035149748, 91593941402,599021799242,3924954250975, 25760310654100,169322682857430,1114452091832130, 7344021912458295,48448974411575280, 319942093205166840,2114743632331515480] |