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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 10 |
| 3 | 20 |
| 4 | 32 |
| 5 | 46 |
| 6 | 66 |
| 7 | 89 |
| 8 | 111 |
| 9 | 138 |
| 10 | 172 |
| 11 | 206 |
| 12 | 240 |
| 13 | 280 |
| 14 | 326 |
| 15 | 373 |
| 16 | 419 |
| 17 | 470 |
| 18 | 530 |
| 19 | 590 |
| 20 | 646 |
| 21 | 710 |
| 22 | 784 |
| 23 | 855 |
| 24 | 923 |
| 25 | 1000 |
| 26 | 1086 |
| 27 | 1170 |
| 28 | 1250 |
| 29 | 1338 |
| 30 | 1438 |
| 31 | 1535 |
| 32 | 1625 |
| 33 | 1726 |
| 34 | 1840 |
| 35 | 1948 |
| 36 | 2050 |
| 37 | 2164 |
| 38 | 2290 |
| 39 | 2411 |
| 40 | 2525 |
| 41 | 2650 |
| 42 | 2790 |
| 43 | 2924 |
| 44 | 3048 |
| 45 | 3186 |
| 46 | 3340 |
| 47 | 3485 |
| 48 | 3621 |
| 49 | 3772 |
| 50 | 3938 |
[1,4,10,20,32,46,66,89,111,138,172,206,240,280, 326,373,419,470,530,590,646,710,784,855,923,1000, 1086,1170,1250,1338,1438,1535,1625,1726,1840,1948, 2050,2164,2290,2411,2525,2650,2790,2924,3048,3186, 3340,3485,3621,3772,3938] |