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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 7 |
| 3 | 10 |
| 4 | 13 |
| 5 | 16 |
| 6 | 19 |
| 7 | 22 |
| 8 | 355 |
| 9 | 104348 |
| 10 | 312689 |
| 11 | 1146408 |
| 12 | 5419351 |
| 13 | 85563208 |
| 14 | 165707065 |
| 15 | 411557987 |
| 16 | 1480524883 |
| 17 | 2549491779 |
| 18 | 8717442233 |
| 19 | 14885392687 |
| 20 | 35938735828 |
| 21 | 56992078969 |
| 22 | 78045422110 |
| 23 | 99098765251 |
| 24 | 120152108392 |
[1,4,7,10,13,16,19,22,355,104348,312689,1146408, 5419351,85563208,165707065,411557987,1480524883, 2549491779,8717442233,14885392687,35938735828, 56992078969,78045422110,99098765251,120152108392] |