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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 26 |
| 2 | 244 |
| 3 | 2024 |
| 4 | 16336 |
| 5 | 130976 |
| 6 | 1048384 |
| 7 | 8388224 |
| 8 | 67108096 |
| 9 | 536869376 |
| 10 | 4294964224 |
| 11 | 34359732224 |
| 12 | 274877894656 |
| 13 | 2199023230976 |
| 14 | 17592185995264 |
| 15 | 140737488257024 |
| 16 | 1125899906646016 |
| 17 | 9007199254347776 |
| 18 | 72057594037141504 |
| 19 | 576460752301850624 |
| 20 | 4611686018424242176 |
[1,26,244,2024,16336,130976,1048384,8388224, 67108096,536869376,4294964224,34359732224, 274877894656,2199023230976,17592185995264, 140737488257024,1125899906646016,9007199254347776, 72057594037141504,576460752301850624, 4611686018424242176] |