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| n | a(n) |
|---|---|
| 1 | 36 |
| 2 | 154 |
| 3 | 576 |
| 4 | 2024 |
| 5 | 6800 |
| 6 | 22568 |
| 7 | 73472 |
| 8 | 240760 |
| 9 | 780588 |
| 10 | 2570304 |
| 11 | 8389972 |
| 12 | 27928068 |
| 13 | 92072644 |
| 14 | 310034916 |
| 15 | 1031933696 |
| 16 | 3509571076 |
| 17 | 11773984392 |
| 18 | 40357220784 |
| 19 | 136211521048 |
| 20 | 469619503208 |
| 21 | 1592083419460 |
| 22 | 5512376842976 |
| 23 | 18747568314652 |
[36,154,576,2024,6800,22568,73472,240760,780588, 2570304,8389972,27928068,92072644,310034916, 1031933696,3509571076,11773984392,40357220784, 136211521048,469619503208,1592083419460, 5512376842976,18747568314652] |