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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 4 |
| 3 | 9 |
| 4 | 22 |
| 5 | 44 |
| 6 | 92 |
| 7 | 175 |
| 8 | 330 |
| 9 | 606 |
| 10 | 1076 |
| 11 | 1891 |
| 12 | 3258 |
| 13 | 5526 |
| 14 | 9236 |
| 15 | 15291 |
| 16 | 24964 |
| 17 | 40393 |
| 18 | 64728 |
| 19 | 102791 |
| 20 | 161930 |
| 21 | 253184 |
| 22 | 392978 |
| 23 | 605924 |
| 24 | 928466 |
| 25 | 1414066 |
| 26 | 2141696 |
| 27 | 3226409 |
| 28 | 4835794 |
| 29 | 7212968 |
| 30 | 10709434 |
| 31 | 15830353 |
| 32 | 23301798 |
| 33 | 34161140 |
| 34 | 49887096 |
| 35 | 72581655 |
| 36 | 105222878 |
| 37 | 152017339 |
| 38 | 218893288 |
[0,1,4,9,22,44,92,175,330,606,1076,1891,3258,5526, 9236,15291,24964,40393,64728,102791,161930,253184, 392978,605924,928466,1414066,2141696,3226409, 4835794,7212968,10709434,15830353,23301798, 34161140,49887096,72581655,105222878,152017339, 218893288] |