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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 2 |
| 3 | 6 |
| 4 | 24 |
| 5 | 44 |
| 6 | 48 |
| 7 | 218 |
| 8 | 318 |
| 9 | 338 |
| 10 | 342 |
| 11 | 1182 |
| 12 | 1776 |
| 13 | 2276 |
| 14 | 2376 |
| 15 | 2396 |
| 16 | 2400 |
| 17 | 13682 |
| 18 | 16182 |
| 19 | 16682 |
| 20 | 16782 |
| 21 | 16802 |
| 22 | 16806 |
| 23 | 39524 |
| 24 | 102024 |
| 25 | 114524 |
| 26 | 117024 |
| 27 | 117524 |
| 28 | 117624 |
| 29 | 117644 |
| 30 | 117648 |
| 31 | 432918 |
| 32 | 745418 |
| 33 | 807918 |
| 34 | 820418 |
| 35 | 822918 |
| 36 | 823418 |
| 37 | 823518 |
| 38 | 823538 |
| 39 | 823542 |
[0,2,6,24,44,48,218,318,338,342,1182,1776,2276, 2376,2396,2400,13682,16182,16682,16782,16802, 16806,39524,102024,114524,117024,117524,117624, 117644,117648,432918,745418,807918,820418,822918, 823418,823518,823538,823542] |