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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 7 |
| 4 | 17 |
| 5 | 35 |
| 6 | 76 |
| 7 | 149 |
| 8 | 291 |
| 9 | 539 |
| 10 | 974 |
| 11 | 1691 |
| 12 | 2874 |
| 13 | 4730 |
| 14 | 7620 |
| 15 | 11986 |
| 16 | 18485 |
| 17 | 27944 |
| 18 | 41550 |
| 19 | 60744 |
| 20 | 87527 |
| 21 | 124338 |
| 22 | 174403 |
| 23 | 241650 |
| 24 | 331153 |
| 25 | 448987 |
| 26 | 602853 |
| 27 | 801943 |
| 28 | 1057615 |
| 29 | 1383343 |
| 30 | 1795578 |
| 31 | 2313595 |
| 32 | 2960656 |
| 33 | 3763879 |
| 34 | 4755505 |
| 35 | 5972927 |
| 36 | 7460196 |
| 37 | 9267980 |
[1,1,3,7,17,35,76,149,291,539,974,1691,2874,4730, 7620,11986,18485,27944,41550,60744,87527,124338, 174403,241650,331153,448987,602853,801943,1057615, 1383343,1795578,2313595,2960656,3763879,4755505, 5972927,7460196,9267980] |