n | a(n) |
---|---|
0 | 1 |
1 | 19 |
2 | 55 |
3 | 161 |
4 | 473 |
5 | 1393 |
6 | 4109 |
7 | 12135 |
8 | 35871 |
9 | 106113 |
10 | 314093 |
11 | 930187 |
12 | 2755955 |
13 | 8168423 |
14 | 24218539 |
15 | 71826449 |
16 | 213075513 |
17 | 632242305 |
18 | 1876395357 |
19 | 5569898331 |
20 | 16536545331 |
21 | 49103259773 |
22 | 145827049265 |
23 | 433134662087 |
24 | 1286649627671 |
[1,19,55,161,473,1393,4109,12135,35871,106113, 314093,930187,2755955,8168423,24218539,71826449, 213075513,632242305,1876395357,5569898331, 16536545331,49103259773,145827049265,433134662087, 1286649627671] |