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| n | a(n) |
|---|---|
| 1 | 21 |
| 2 | 3014 |
| 3 | 439644 |
| 4 | 62776264 |
| 5 | 8936245171 |
| 6 | 1271770432077 |
| 7 | 181000238870646 |
| 8 | 25760940724765249 |
| 9 | 3666476510299319316 |
| 10 | 521840279989725924865 |
| 11 | 74272277349160073400124 |
| 12 | 10570998423180909949529557 |
[21,3014,439644,62776264,8936245171,1271770432077, 181000238870646,25760940724765249, 3666476510299319316,521840279989725924865, 74272277349160073400124, 10570998423180909949529557] |