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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 3 |
| 3 | 6 |
| 4 | 13 |
| 5 | 28 |
| 6 | 59 |
| 7 | 122 |
| 8 | 249 |
| 9 | 504 |
| 10 | 1015 |
| 11 | 2038 |
| 12 | 4085 |
| 13 | 8180 |
| 14 | 16371 |
| 15 | 32754 |
| 16 | 65521 |
| 17 | 131056 |
| 18 | 262127 |
| 19 | 524270 |
| 20 | 1048557 |
| 21 | 2097132 |
| 22 | 4194283 |
| 23 | 8388586 |
| 24 | 16777193 |
| 25 | 33554408 |
| 26 | 67108839 |
| 27 | 134217702 |
| 28 | 268435429 |
| 29 | 536870884 |
| 30 | 1073741795 |
| 31 | 2147483618 |
| 32 | 4294967265 |
| 33 | 8589934560 |
[1,2,3,6,13,28,59,122,249,504,1015,2038,4085,8180, 16371,32754,65521,131056,262127,524270,1048557, 2097132,4194283,8388586,16777193,33554408, 67108839,134217702,268435429,536870884,1073741795, 2147483618,4294967265,8589934560] |