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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 8 |
| 3 | 18 |
| 4 | 36 |
| 5 | 56 |
| 6 | 66 |
| 7 | 116 |
| 8 | 140 |
| 9 | 154 |
| 10 | 232 |
| 11 | 264 |
| 12 | 294 |
| 13 | 392 |
| 14 | 432 |
| 15 | 478 |
| 16 | 588 |
| 17 | 620 |
| 18 | 718 |
| 19 | 816 |
| 20 | 868 |
| 21 | 962 |
| 22 | 1112 |
| 23 | 1140 |
| 24 | 1278 |
| 25 | 1396 |
| 26 | 1500 |
| 27 | 1594 |
| 28 | 1772 |
| 29 | 1832 |
| 30 | 2010 |
| 31 | 2140 |
| 32 | 2268 |
| 33 | 2382 |
| 34 | 2628 |
| 35 | 2672 |
| 36 | 2878 |
| 37 | 3056 |
| 38 | 3208 |
| 39 | 3334 |
| 40 | 3620 |
| 41 | 3668 |
| 42 | 3942 |
| 43 | 4120 |
| 44 | 4284 |
| 45 | 4458 |
| 46 | 4784 |
| 47 | 4828 |
[1,4,8,18,36,56,66,116,140,154,232,264,294,392, 432,478,588,620,718,816,868,962,1112,1140,1278, 1396,1500,1594,1772,1832,2010,2140,2268,2382,2628, 2672,2878,3056,3208,3334,3620,3668,3942,4120,4284, 4458,4784,4828] |