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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 10 |
| 3 | 20 |
| 4 | 35 |
| 5 | 54 |
| 6 | 76 |
| 7 | 104 |
| 8 | 136 |
| 9 | 171 |
| 10 | 211 |
| 11 | 254 |
| 12 | 302 |
| 13 | 355 |
| 14 | 411 |
| 15 | 471 |
| 16 | 536 |
| 17 | 606 |
| 18 | 679 |
| 19 | 756 |
| 20 | 837 |
| 21 | 922 |
| 22 | 1013 |
| 23 | 1107 |
| 24 | 1204 |
| 25 | 1307 |
| 26 | 1414 |
| 27 | 1525 |
| 28 | 1640 |
| 29 | 1758 |
| 30 | 1881 |
| 31 | 2009 |
| 32 | 2141 |
| 33 | 2276 |
| 34 | 2416 |
| 35 | 2561 |
| 36 | 2709 |
| 37 | 2862 |
| 38 | 3018 |
| 39 | 3178 |
| 40 | 3344 |
| 41 | 3513 |
| 42 | 3686 |
| 43 | 3864 |
| 44 | 4046 |
| 45 | 4232 |
| 46 | 4422 |
| 47 | 4616 |
[1,4,10,20,35,54,76,104,136,171,211,254,302,355, 411,471,536,606,679,756,837,922,1013,1107,1204, 1307,1414,1525,1640,1758,1881,2009,2141,2276,2416, 2561,2709,2862,3018,3178,3344,3513,3686,3864,4046, 4232,4422,4616] |