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| n | a(n) |
|---|---|
| 1 | 25 |
| 2 | 177 |
| 3 | 1177 |
| 4 | 2501 |
| 5 | 17105 |
| 6 | 21337 |
| 7 | 22681 |
| 8 | 32581 |
| 9 | 217009 |
| 10 | 409501 |
| 11 | 561601 |
| 12 | 577501 |
| 13 | 861841 |
| 14 | 1025821 |
| 15 | 1401841 |
| 16 | 1738081 |
| 17 | 2836465 |
| 18 | 8331361 |
| 19 | 10284193 |
| 20 | 19971901 |
| 21 | 20103001 |
| 22 | 27835921 |
| 23 | 31949921 |
| 24 | 34897501 |
| 25 | 100763053 |
| 26 | 107314217 |
| 27 | 111512701 |
| 28 | 121806001 |
| 29 | 150658561 |
| 30 | 155874001 |
[25,177,1177,2501,17105,21337,22681,32581,217009, 409501,561601,577501,861841,1025821,1401841, 1738081,2836465,8331361,10284193,19971901, 20103001,27835921,31949921,34897501,100763053, 107314217,111512701,121806001,150658561,155874001] |