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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 20 |
| 3 | 84 |
| 4 | 200 |
| 5 | 403 |
| 6 | 720 |
| 7 | 1180 |
| 8 | 1808 |
| 9 | 2631 |
| 10 | 3676 |
| 11 | 4970 |
| 12 | 6540 |
| 13 | 8413 |
| 14 | 10616 |
| 15 | 13176 |
| 16 | 16120 |
| 17 | 19475 |
| 18 | 23268 |
| 19 | 27526 |
| 20 | 32276 |
| 21 | 37545 |
| 22 | 43360 |
| 23 | 49748 |
| 24 | 56736 |
| 25 | 64351 |
| 26 | 72620 |
| 27 | 81570 |
| 28 | 91228 |
| 29 | 101621 |
| 30 | 112776 |
| 31 | 124720 |
| 32 | 137480 |
| 33 | 151083 |
| 34 | 165556 |
| 35 | 180926 |
| 36 | 197220 |
[1,20,84,200,403,720,1180,1808,2631,3676,4970, 6540,8413,10616,13176,16120,19475,23268,27526, 32276,37545,43360,49748,56736,64351,72620,81570, 91228,101621,112776,124720,137480,151083,165556, 180926,197220] |