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| n | a(n) |
|---|---|
| 1 | 2201616 |
| 2 | 4771368 |
| 3 | 11836406 |
| 4 | 34896603 |
| 5 | 105040512 |
| 6 | 253515215 |
| 7 | 434785178 |
| 8 | 1133168035 |
| 9 | 3388002996 |
| 10 | 9547411698 |
| 11 | 26675577140 |
| 12 | 69844593335 |
| 13 | 198216306984 |
| 14 | 551414962883 |
| 15 | 1593064659184 |
| 16 | 4364229224264 |
| 17 | 12092092436966 |
| 18 | 33432090895408 |
[2201616,4771368,11836406,34896603,105040512, 253515215,434785178,1133168035,3388002996, 9547411698,26675577140,69844593335,198216306984, 551414962883,1593064659184,4364229224264, 12092092436966,33432090895408] |