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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 5 |
| 3 | 31 |
| 4 | 106 |
| 5 | 270 |
| 6 | 575 |
| 7 | 1085 |
| 8 | 1876 |
| 9 | 3036 |
| 10 | 4665 |
| 11 | 6875 |
| 12 | 9790 |
| 13 | 13546 |
| 14 | 18291 |
| 15 | 24185 |
| 16 | 31400 |
| 17 | 40120 |
| 18 | 50541 |
| 19 | 62871 |
| 20 | 77330 |
| 21 | 94150 |
| 22 | 113575 |
| 23 | 135861 |
| 24 | 161276 |
| 25 | 190100 |
| 26 | 222625 |
| 27 | 259155 |
| 28 | 300006 |
| 29 | 345506 |
| 30 | 395995 |
| 31 | 451825 |
| 32 | 513360 |
| 33 | 580976 |
| 34 | 655061 |
[0,0,5,31,106,270,575,1085,1876,3036,4665,6875, 9790,13546,18291,24185,31400,40120,50541,62871, 77330,94150,113575,135861,161276,190100,222625, 259155,300006,345506,395995,451825,513360,580976, 655061] |