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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 15 |
| 4 | 31 |
| 5 | 15 |
| 6 | 31 |
| 7 | 63 |
| 8 | 127 |
| 9 | 63 |
| 10 | 127 |
| 11 | 255 |
| 12 | 511 |
| 13 | 1023 |
| 14 | 2047 |
| 15 | 4095 |
| 16 | 8191 |
| 17 | 15359 |
| 18 | 30719 |
| 19 | 65535 |
| 20 | 131071 |
| 21 | 245759 |
| 22 | 491519 |
| 23 | 1048575 |
| 24 | 2097151 |
| 25 | 3604479 |
| 26 | 7208959 |
| 27 | 16777215 |
| 28 | 33554431 |
| 29 | 58458111 |
| 30 | 116916223 |
| 31 | 176160767 |
| 32 | 352321535 |
| 33 | 301203455 |
| 34 | 602406911 |
| 35 | 131071999 |
[1,1,3,15,31,15,31,63,127,63,127,255,511,1023, 2047,4095,8191,15359,30719,65535,131071,245759, 491519,1048575,2097151,3604479,7208959,16777215, 33554431,58458111,116916223,176160767,352321535, 301203455,602406911,131071999] |