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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 154 |
| 3 | 1971 |
| 4 | 26145 |
| 5 | 345529 |
| 6 | 4591348 |
| 7 | 60957131 |
| 8 | 808775383 |
| 9 | 10730450566 |
| 10 | 142374312237 |
| 11 | 1889071087541 |
| 12 | 25064739289749 |
| 13 | 332565856800052 |
| 14 | 4412576498338590 |
| 15 | 58547301537107255 |
[7,154,1971,26145,345529,4591348,60957131, 808775383,10730450566,142374312237,1889071087541, 25064739289749,332565856800052,4412576498338590, 58547301537107255] |