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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 18 |
| 2 | 973 |
| 3 | 17532 |
| 4 | 947701 |
| 5 | 17076150 |
| 6 | 923059801 |
| 7 | 16632152568 |
| 8 | 899059298473 |
| 9 | 16199699525082 |
| 10 | 875682833652901 |
| 11 | 15778490705277300 |
| 12 | 852914180918627101 |
| 13 | 15368233747240565118 |
| 14 | 830737536531909143473 |
| 15 | 14968643891321605147632 |
[1,18,973,17532,947701,17076150,923059801, 16632152568,899059298473,16199699525082, 875682833652901,15778490705277300, 852914180918627101,15368233747240565118, 830737536531909143473,14968643891321605147632] |