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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 4 |
| 5 | 4 |
| 6 | 4 |
| 7 | 4 |
| 8 | 12 |
| 9 | 21 |
| 10 | 21 |
| 11 | 21 |
| 12 | 33 |
| 13 | 33 |
| 14 | 33 |
| 15 | 33 |
| 16 | 49 |
| 17 | 49 |
| 18 | 67 |
| 19 | 67 |
| 20 | 87 |
| 21 | 87 |
| 22 | 87 |
| 23 | 87 |
| 24 | 111 |
| 25 | 136 |
| 26 | 136 |
| 27 | 163 |
| 28 | 191 |
| 29 | 191 |
| 30 | 191 |
| 31 | 191 |
| 32 | 223 |
| 33 | 223 |
| 34 | 223 |
| 35 | 223 |
| 36 | 259 |
| 37 | 259 |
| 38 | 259 |
| 39 | 259 |
| 40 | 299 |
| 41 | 299 |
| 42 | 299 |
| 43 | 299 |
| 44 | 343 |
| 45 | 388 |
| 46 | 388 |
| 47 | 388 |
| 48 | 436 |
| 49 | 485 |
| 50 | 535 |
| 51 | 535 |
| 52 | 587 |
| 53 | 587 |
| 54 | 641 |
| 55 | 641 |
| 56 | 697 |
| 57 | 697 |
| 58 | 697 |
[0,0,0,4,4,4,4,12,21,21,21,33,33,33,33,49,49,67, 67,87,87,87,87,111,136,136,163,191,191,191,191, 223,223,223,223,259,259,259,259,299,299,299,299, 343,388,388,388,436,485,535,535,587,587,641,641, 697,697,697] |