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| n | a(n) |
|---|---|
| 10 | 1 |
| 11 | 1 |
| 12 | 6 |
| 13 | 14 |
| 14 | 47 |
| 15 | 111 |
| 16 | 280 |
| 17 | 600 |
| 18 | 1282 |
| 19 | 2494 |
| 20 | 4752 |
| 21 | 8524 |
| 22 | 14938 |
| 23 | 25102 |
| 24 | 41272 |
| 25 | 65772 |
| 26 | 102817 |
| 27 | 156871 |
| 28 | 235378 |
| 29 | 346346 |
| 30 | 502303 |
| 31 | 716859 |
| 32 | 1010256 |
| 33 | 1404624 |
| 34 | 1931540 |
| 35 | 2625658 |
| 36 | 3534776 |
| 37 | 4711448 |
| 38 | 6226148 |
| 39 | 8156396 |
| 40 | 10603704 |
[1,1,6,14,47,111,280,600,1282,2494,4752,8524, 14938,25102,41272,65772,102817,156871,235378, 346346,502303,716859,1010256,1404624,1931540, 2625658,3534776,4711448,6226148,8156396,10603704] |