n | a(n) |
---|---|
0 | 1 |
1 | 27 |
2 | 377 |
3 | 3626 |
4 | 26999 |
5 | 165852 |
6 | 874755 |
7 | 4071079 |
8 | 17052724 |
9 | 65259715 |
10 | 230856472 |
11 | 761987905 |
12 | 2364726003 |
13 | 6943746516 |
14 | 19395654894 |
15 | 51770913911 |
16 | 132567002957 |
17 | 326758146932 |
18 | 777583981286 |
19 | 1791153918119 |
20 | 4003030425506 |
21 | 8697839966552 |
[1,27,377,3626,26999,165852,874755,4071079, 17052724,65259715,230856472,761987905,2364726003, 6943746516,19395654894,51770913911,132567002957, 326758146932,777583981286,1791153918119, 4003030425506,8697839966552] |