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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 22 |
| 3 | 70 |
| 4 | 715 |
| 5 | 1330 |
| 6 | 4025 |
| 7 | 6370 |
| 8 | 14014 |
| 9 | 17290 |
| 10 | 25025 |
| 11 | 45815 |
| 12 | 73150 |
| 13 | 121030 |
| 14 | 95095 |
| 15 | 85085 |
| 16 | 256025 |
| 17 | 350350 |
| 18 | 432250 |
| 19 | 1179178 |
| 20 | 425425 |
| 21 | 575575 |
| 22 | 734825 |
| 23 | 950950 |
| 24 | 1926925 |
| 25 | 3751930 |
| 26 | 2187185 |
| 27 | 1616615 |
| 28 | 1956955 |
| 29 | 3148145 |
| 30 | 3658655 |
| 31 | 4029025 |
| 32 | 2977975 |
| 33 | 4352425 |
| 34 | 6656650 |
| 35 | 13918450 |
[1,22,70,715,1330,4025,6370,14014,17290,25025, 45815,73150,121030,95095,85085,256025,350350, 432250,1179178,425425,575575,734825,950950, 1926925,3751930,2187185,1616615,1956955,3148145, 3658655,4029025,2977975,4352425,6656650,13918450] |