n | a(n) |
---|---|
1 | 1 |
2 | 7 |
3 | 28 |
4 | 114 |
5 | 457 |
6 | 1831 |
7 | 7324 |
8 | 29298 |
9 | 117193 |
10 | 468775 |
11 | 1875100 |
12 | 7500402 |
13 | 30001609 |
14 | 120006439 |
15 | 480025756 |
16 | 1920103026 |
17 | 7680412105 |
18 | 30721648423 |
19 | 122886593692 |
20 | 491546374770 |
21 | 1966185499081 |
22 | 7864741996327 |
23 | 31458967985308 |
[1,7,28,114,457,1831,7324,29298,117193,468775, 1875100,7500402,30001609,120006439,480025756, 1920103026,7680412105,30721648423,122886593692, 491546374770,1966185499081,7864741996327, 31458967985308] |