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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 13 |
| 5 | 31 |
| 6 | 58 |
| 7 | 76 |
| 8 | 96 |
| 9 | 147 |
| 10 | 174 |
| 11 | 306 |
| 12 | 532 |
| 13 | 1177 |
| 14 | 3019 |
| 15 | 5790 |
| 16 | 5952 |
| 17 | 7489 |
| 18 | 10269 |
| 19 | 10936 |
| 20 | 20209 |
| 21 | 28188 |
| 22 | 55645 |
| 23 | 71068 |
| 24 | 89640 |
[1,3,6,13,31,58,76,96,147,174,306,532,1177,3019, 5790,5952,7489,10269,10936,20209,28188,55645, 71068,89640] |