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| n | a(n) |
|---|---|
| 1 | 3215031751 |
| 2 | 118670087467 |
| 3 | 307768373641 |
| 4 | 315962312077 |
| 5 | 354864744877 |
| 6 | 457453568161 |
| 7 | 528929554561 |
| 8 | 546348519181 |
| 9 | 602248359169 |
| 10 | 1362242655901 |
| 11 | 1871186716981 |
| 12 | 2152302898747 |
| 13 | 2273312197621 |
| 14 | 2366338900801 |
| 15 | 3343433905957 |
| 16 | 3461715915661 |
| 17 | 3474749660383 |
| 18 | 3477707481751 |
| 19 | 4341937413061 |
| 20 | 4777422165601 |
| 21 | 5537838510751 |
[3215031751,118670087467,307768373641, 315962312077,354864744877,457453568161, 528929554561,546348519181,602248359169, 1362242655901,1871186716981,2152302898747, 2273312197621,2366338900801,3343433905957, 3461715915661,3474749660383,3477707481751, 4341937413061,4777422165601,5537838510751] |