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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 6 |
| 3 | 12 |
| 4 | 20 |
| 5 | 31 |
| 6 | 44 |
| 7 | 59 |
| 8 | 76 |
| 9 | 96 |
| 10 | 118 |
| 11 | 142 |
| 12 | 168 |
| 13 | 197 |
| 14 | 228 |
| 15 | 261 |
| 16 | 296 |
| 17 | 334 |
| 18 | 374 |
| 19 | 416 |
| 20 | 460 |
| 21 | 506 |
| 22 | 555 |
| 23 | 606 |
| 24 | 659 |
| 25 | 714 |
| 26 | 772 |
| 27 | 832 |
| 28 | 894 |
| 29 | 958 |
| 30 | 1025 |
| 31 | 1094 |
| 32 | 1165 |
| 33 | 1238 |
| 34 | 1314 |
| 35 | 1392 |
| 36 | 1472 |
| 37 | 1554 |
| 38 | 1638 |
| 39 | 1725 |
| 40 | 1814 |
| 41 | 1905 |
| 42 | 1998 |
| 43 | 2094 |
| 44 | 2192 |
| 45 | 2292 |
| 46 | 2394 |
| 47 | 2499 |
| 48 | 2606 |
[2,6,12,20,31,44,59,76,96,118,142,168,197,228,261, 296,334,374,416,460,506,555,606,659,714,772,832, 894,958,1025,1094,1165,1238,1314,1392,1472,1554, 1638,1725,1814,1905,1998,2094,2192,2292,2394,2499, 2606] |