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| n | a(n) |
|---|---|
| 1 | 10 |
| 2 | 100 |
| 3 | 144 |
| 4 | 640 |
| 5 | 2176 |
| 6 | 7072 |
| 7 | 25200 |
| 8 | 87040 |
| 9 | 296560 |
| 10 | 1028128 |
| 11 | 3545856 |
| 12 | 12198016 |
| 13 | 42085264 |
| 14 | 145092160 |
| 15 | 499958928 |
| 16 | 1723635712 |
| 17 | 5941670272 |
| 18 | 20479942816 |
| 19 | 70597050480 |
| 20 | 243353573632 |
| 21 | 838843117552 |
| 22 | 2891546321440 |
| 23 | 9967326856704 |
[10,100,144,640,2176,7072,25200,87040,296560, 1028128,3545856,12198016,42085264,145092160, 499958928,1723635712,5941670272,20479942816, 70597050480,243353573632,838843117552, 2891546321440,9967326856704] |