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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 10 |
| 3 | 28 |
| 4 | 136 |
| 5 | 496 |
| 6 | 2080 |
| 7 | 8128 |
| 8 | 32896 |
| 9 | 130816 |
| 10 | 524800 |
| 11 | 2096128 |
| 12 | 8390656 |
| 13 | 33550336 |
| 14 | 134225920 |
| 15 | 536854528 |
| 16 | 2147516416 |
| 17 | 8589869056 |
| 18 | 34359869440 |
| 19 | 137438691328 |
| 20 | 549756338176 |
| 21 | 2199022206976 |
| 22 | 8796095119360 |
| 23 | 35184367894528 |
| 24 | 140737496743936 |
| 25 | 562949936644096 |
| 26 | 2251799847239680 |
[1,1,10,28,136,496,2080,8128,32896,130816,524800, 2096128,8390656,33550336,134225920,536854528, 2147516416,8589869056,34359869440,137438691328, 549756338176,2199022206976,8796095119360, 35184367894528,140737496743936,562949936644096, 2251799847239680] |