| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 36 |
| 3 | 140 |
| 4 | 364 |
| 5 | 756 |
| 6 | 1364 |
| 7 | 2236 |
| 8 | 3420 |
| 9 | 4964 |
| 10 | 6916 |
| 11 | 9324 |
| 12 | 12236 |
| 13 | 15700 |
| 14 | 19764 |
| 15 | 24476 |
| 16 | 29884 |
| 17 | 36036 |
| 18 | 42980 |
| 19 | 50764 |
| 20 | 59436 |
| 21 | 69044 |
| 22 | 79636 |
| 23 | 91260 |
| 24 | 103964 |
| 25 | 117796 |
| 26 | 132804 |
| 27 | 149036 |
| 28 | 166540 |
| 29 | 185364 |
| 30 | 205556 |
| 31 | 227164 |
| 32 | 250236 |
| 33 | 274820 |
| 34 | 300964 |
| 35 | 328716 |
| 36 | 358124 |
[4,36,140,364,756,1364,2236,3420,4964,6916,9324, 12236,15700,19764,24476,29884,36036,42980,50764, 59436,69044,79636,91260,103964,117796,132804, 149036,166540,185364,205556,227164,250236,274820, 300964,328716,358124] |