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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 5 |
| 4 | 8 |
| 5 | 17 |
| 6 | 34 |
| 7 | 63 |
| 8 | 130 |
| 9 | 255 |
| 10 | 512 |
| 11 | 1011 |
| 12 | 2054 |
| 13 | 4057 |
| 14 | 7990 |
| 15 | 16261 |
| 16 | 31870 |
| 17 | 63341 |
| 18 | 124692 |
| 19 | 247123 |
| 20 | 487028 |
| 21 | 952439 |
| 22 | 1866764 |
| 23 | 3640427 |
| 24 | 7134760 |
| 25 | 13808661 |
| 26 | 26792704 |
| 27 | 51847089 |
| 28 | 100150988 |
| 29 | 192939285 |
| 30 | 370315400 |
[1,1,2,5,8,17,34,63,130,255,512,1011,2054,4057, 7990,16261,31870,63341,124692,247123,487028, 952439,1866764,3640427,7134760,13808661,26792704, 51847089,100150988,192939285,370315400] |