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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 6 |
| 3 | 8 |
| 4 | 12 |
| 5 | 18 |
| 6 | 26 |
| 7 | 38 |
| 8 | 56 |
| 9 | 82 |
| 10 | 120 |
| 11 | 176 |
| 12 | 258 |
| 13 | 378 |
| 14 | 554 |
| 15 | 812 |
| 16 | 1190 |
| 17 | 1744 |
| 18 | 2556 |
| 19 | 3746 |
| 20 | 5490 |
| 21 | 8046 |
| 22 | 11792 |
| 23 | 17282 |
| 24 | 25328 |
| 25 | 37120 |
| 26 | 54402 |
| 27 | 79730 |
| 28 | 116850 |
| 29 | 171252 |
| 30 | 250982 |
| 31 | 367832 |
| 32 | 539084 |
| 33 | 790066 |
| 34 | 1157898 |
| 35 | 1696982 |
| 36 | 2487048 |
| 37 | 3644946 |
| 38 | 5341928 |
| 39 | 7828976 |
| 40 | 11473922 |
[1,3,6,8,12,18,26,38,56,82,120,176,258,378,554, 812,1190,1744,2556,3746,5490,8046,11792,17282, 25328,37120,54402,79730,116850,171252,250982, 367832,539084,790066,1157898,1696982,2487048, 3644946,5341928,7828976,11473922] |