n | a(n) |
---|---|
1 | 1 |
2 | 72 |
3 | 154 |
4 | 918 |
5 | 6580 |
6 | 49293 |
7 | 367512 |
8 | 2856621 |
9 | 22185382 |
10 | 172716970 |
11 | 1347540710 |
12 | 10518804501 |
13 | 82131380313 |
14 | 641409831341 |
15 | 5009453613390 |
16 | 39125509173987 |
17 | 305589139123276 |
18 | 2386818398723114 |
19 | 18642433335189313 |
20 | 145608500721079409 |
[1,72,154,918,6580,49293,367512,2856621,22185382, 172716970,1347540710,10518804501,82131380313, 641409831341,5009453613390,39125509173987, 305589139123276,2386818398723114, 18642433335189313,145608500721079409] |