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| n | a(n) |
|---|---|
| 0 | 6 |
| 1 | 13 |
| 2 | 28 |
| 3 | 58 |
| 4 | 120 |
| 5 | 244 |
| 6 | 496 |
| 7 | 1000 |
| 8 | 2016 |
| 9 | 4048 |
| 10 | 8128 |
| 11 | 16288 |
| 12 | 32640 |
| 13 | 65344 |
| 14 | 130816 |
| 15 | 261760 |
| 16 | 523776 |
| 17 | 1047808 |
| 18 | 2096128 |
| 19 | 4192768 |
| 20 | 8386560 |
| 21 | 16774144 |
| 22 | 33550336 |
| 23 | 67102720 |
| 24 | 134209536 |
| 25 | 268423168 |
| 26 | 536854528 |
| 27 | 1073717248 |
| 28 | 2147450880 |
[6,13,28,58,120,244,496,1000,2016,4048,8128,16288, 32640,65344,130816,261760,523776,1047808,2096128, 4192768,8386560,16774144,33550336,67102720, 134209536,268423168,536854528,1073717248, 2147450880] |