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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 25 |
| 2 | 365 |
| 3 | 2030 |
| 4 | 7230 |
| 5 | 19855 |
| 6 | 45955 |
| 7 | 94220 |
| 8 | 176460 |
| 9 | 308085 |
| 10 | 508585 |
| 11 | 802010 |
| 12 | 1217450 |
| 13 | 1789515 |
| 14 | 2558815 |
| 15 | 3572440 |
| 16 | 4884440 |
| 17 | 6556305 |
| 18 | 8657445 |
| 19 | 11265670 |
| 20 | 14467670 |
| 21 | 18359495 |
| 22 | 23047035 |
| 23 | 28646500 |
| 24 | 35284900 |
| 25 | 43100525 |
| 26 | 52243425 |
| 27 | 62875890 |
| 28 | 75172930 |
| 29 | 89322755 |
| 30 | 105527255 |
| 31 | 124002480 |
[0,25,365,2030,7230,19855,45955,94220,176460, 308085,508585,802010,1217450,1789515,2558815, 3572440,4884440,6556305,8657445,11265670,14467670, 18359495,23047035,28646500,35284900,43100525, 52243425,62875890,75172930,89322755,105527255, 124002480] |