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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 7 |
| 3 | 15 |
| 4 | 28 |
| 5 | 60 |
| 6 | 126 |
| 7 | 254 |
| 8 | 503 |
| 9 | 1015 |
| 10 | 2040 |
| 11 | 4088 |
| 12 | 8184 |
| 13 | 16376 |
| 14 | 32744 |
| 15 | 65512 |
| 16 | 130932 |
| 17 | 262004 |
| 18 | 524172 |
| 19 | 1048460 |
| 20 | 2097044 |
| 21 | 4194196 |
| 22 | 8388506 |
| 23 | 16777114 |
| 24 | 33553917 |
| 25 | 67108349 |
| 26 | 134217211 |
| 27 | 268434939 |
| 28 | 536870399 |
| 29 | 1073741311 |
| 30 | 2147479495 |
| 31 | 4294963143 |
| 32 | 8589897639 |
[1,2,7,15,28,60,126,254,503,1015,2040,4088,8184, 16376,32744,65512,130932,262004,524172,1048460, 2097044,4194196,8388506,16777114,33553917, 67108349,134217211,268434939,536870399,1073741311, 2147479495,4294963143,8589897639] |