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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 6 |
| 4 | 17 |
| 5 | 24 |
| 6 | 53 |
| 7 | 94 |
| 8 | 173 |
| 9 | 340 |
| 10 | 601 |
| 11 | 1178 |
| 12 | 2137 |
| 13 | 4056 |
| 14 | 7565 |
| 15 | 14086 |
| 16 | 26533 |
| 17 | 49276 |
| 18 | 92641 |
| 19 | 172722 |
| 20 | 323409 |
| 21 | 604896 |
| 22 | 1130389 |
| 23 | 2116062 |
| 24 | 3954141 |
| 25 | 7399172 |
| 26 | 13833769 |
| 27 | 25873674 |
| 28 | 48391369 |
| 29 | 90490216 |
| 30 | 169253917 |
| 31 | 316506038 |
| 32 | 591959445 |
| 33 | 1107045516 |
[1,5,6,17,24,53,94,173,340,601,1178,2137,4056, 7565,14086,26533,49276,92641,172722,323409,604896, 1130389,2116062,3954141,7399172,13833769,25873674, 48391369,90490216,169253917,316506038,591959445, 1107045516] |