n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 17 |
4 | 123 |
5 | 755 |
6 | 9183 |
7 | 74219 |
8 | 1122468 |
9 | 14666303 |
10 | 265115922 |
11 | 3196057367 |
12 | 89754722198 |
13 | 1259762168139 |
14 | 30324046757534 |
15 | 729036884348955 |
16 | 22630467461575139 |
17 | 408077451192701457 |
18 | 15937651063976931962 |
19 | 319161098730731340697 |
20 | 13420703797754693241236 |
21 | 429781682626880915060249 |
[1,4,17,123,755,9183,74219,1122468,14666303, 265115922,3196057367,89754722198,1259762168139, 30324046757534,729036884348955,22630467461575139, 408077451192701457,15937651063976931962, 319161098730731340697,13420703797754693241236, 429781682626880915060249] |