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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 25 |
| 3 | 1105 |
| 4 | 5095 |
| 5 | 8925 |
| 6 | 54549 |
| 7 | 218295 |
| 8 | 478423 |
| 9 | 939575 |
| 10 | 1475901 |
| 11 | 5047977 |
| 12 | 7635033 |
| 13 | 11213895 |
| 14 | 20680985 |
| 15 | 16776123 |
| 16 | 23599303 |
| 17 | 19371925 |
| 18 | 28569569 |
| 19 | 31983147 |
| 20 | 33984405 |
| 21 | 30885975 |
| 22 | 38189799 |
| 23 | 42059765 |
| 24 | 35086905 |
| 25 | 49400043 |
| 26 | 45711639 |
[1,25,1105,5095,8925,54549,218295,478423,939575, 1475901,5047977,7635033,11213895,20680985, 16776123,23599303,19371925,28569569,31983147, 33984405,30885975,38189799,42059765,35086905, 49400043,45711639] |