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| n | a(n) |
|---|---|
| -1 | 1 |
| 0 | 2 |
| 1 | 4 |
| 2 | 6 |
| 3 | 11 |
| 4 | 18 |
| 5 | 28 |
| 6 | 42 |
| 7 | 62 |
| 8 | 90 |
| 9 | 128 |
| 10 | 180 |
| 11 | 250 |
| 12 | 342 |
| 13 | 464 |
| 14 | 624 |
| 15 | 831 |
| 16 | 1098 |
| 17 | 1440 |
| 18 | 1878 |
| 19 | 2432 |
| 20 | 3132 |
| 21 | 4012 |
| 22 | 5112 |
| 23 | 6485 |
| 24 | 8190 |
| 25 | 10300 |
| 26 | 12900 |
| 27 | 16097 |
| 28 | 20016 |
| 29 | 24804 |
| 30 | 30636 |
| 31 | 37724 |
| 32 | 46314 |
| 33 | 56700 |
| 34 | 69228 |
| 35 | 84302 |
| 36 | 102402 |
| 37 | 124088 |
| 38 | 150024 |
| 39 | 180973 |
| 40 | 217836 |
| 41 | 261664 |
| 42 | 313680 |
[1,2,4,6,11,18,28,42,62,90,128,180,250,342,464, 624,831,1098,1440,1878,2432,3132,4012,5112,6485, 8190,10300,12900,16097,20016,24804,30636,37724, 46314,56700,69228,84302,102402,124088,150024, 180973,217836,261664,313680] |