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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 5 |
| 2 | 11 |
| 3 | 19 |
| 4 | 31 |
| 5 | 59 |
| 6 | 137 |
| 7 | 337 |
| 8 | 795 |
| 9 | 1767 |
| 10 | 3759 |
| 11 | 7813 |
| 12 | 16097 |
| 13 | 33075 |
| 14 | 67793 |
| 15 | 138347 |
| 16 | 280677 |
| 17 | 566041 |
| 18 | 1136129 |
| 19 | 2274529 |
| 20 | 4554047 |
| 21 | 9143516 |
| 22 | 18450225 |
| 23 | 37464726 |
| 24 | 76561127 |
| 25 | 157278265 |
| 26 | 324136399 |
| 27 | 668557741 |
| 28 | 1376893670 |
| 29 | 2826272837 |
[0,5,11,19,31,59,137,337,795,1767,3759,7813,16097, 33075,67793,138347,280677,566041,1136129,2274529, 4554047,9143516,18450225,37464726,76561127, 157278265,324136399,668557741,1376893670, 2826272837] |