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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 4 |
| 4 | 10 |
| 5 | 40 |
| 6 | 100 |
| 7 | 400 |
| 8 | 1000 |
| 9 | 1051 |
| 10 | 4000 |
| 11 | 4051 |
| 12 | 6416 |
| 13 | 6451 |
| 14 | 6454 |
| 15 | 10000 |
| 16 | 10510 |
| 17 | 40000 |
| 18 | 40510 |
| 19 | 64160 |
| 20 | 64510 |
| 21 | 64540 |
| 22 | 100000 |
| 23 | 100501 |
| 24 | 100504 |
| 25 | 105100 |
| 26 | 400000 |
| 27 | 400501 |
| 28 | 405100 |
| 29 | 641600 |
| 30 | 645100 |
| 31 | 645400 |
| 32 | 664116 |
| 33 | 664466 |
| 34 | 664504 |
| 35 | 1000000 |
| 36 | 1005010 |
| 37 | 1005040 |
| 38 | 1051000 |
| 39 | 1051454 |
| 40 | 1054116 |
| 41 | 4000000 |
| 42 | 4001451 |
| 43 | 4005010 |
| 44 | 4051000 |
| 45 | 4051551 |
| 46 | 4056546 |
| 47 | 4056551 |
[0,1,4,10,40,100,400,1000,1051,4000,4051,6416, 6451,6454,10000,10510,40000,40510,64160,64510, 64540,100000,100501,100504,105100,400000,400501, 405100,641600,645100,645400,664116,664466,664504, 1000000,1005010,1005040,1051000,1051454,1054116, 4000000,4001451,4005010,4051000,4051551,4056546, 4056551] |