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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 7 |
| 3 | 22 |
| 4 | 48 |
| 5 | 93 |
| 6 | 180 |
| 7 | 331 |
| 8 | 567 |
| 9 | 918 |
| 10 | 1434 |
| 11 | 2180 |
| 12 | 3232 |
| 13 | 4669 |
| 14 | 6596 |
| 15 | 9142 |
| 16 | 12459 |
| 17 | 16725 |
| 18 | 22148 |
| 19 | 28960 |
| 20 | 37428 |
| 21 | 47860 |
| 22 | 60612 |
| 23 | 76079 |
| 24 | 94702 |
| 25 | 116970 |
| 26 | 143438 |
| 27 | 174721 |
| 28 | 211489 |
| 29 | 254481 |
| 30 | 304520 |
| 31 | 362503 |
| 32 | 429407 |
| 33 | 506290 |
| 34 | 594309 |
| 35 | 694722 |
[1,1,7,22,48,93,180,331,567,918,1434,2180,3232, 4669,6596,9142,12459,16725,22148,28960,37428, 47860,60612,76079,94702,116970,143438,174721, 211489,254481,304520,362503,429407,506290,594309, 694722] |