| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 4 |
| 3 | 4 |
| 4 | 4 |
| 5 | 16 |
| 6 | 4 |
| 7 | 10 |
| 8 | 56 |
| 9 | 56 |
| 10 | 10 |
| 11 | 16 |
| 12 | 211 |
| 13 | 378 |
| 14 | 211 |
| 15 | 16 |
| 16 | 26 |
| 17 | 718 |
| 18 | 3699 |
| 19 | 3699 |
| 20 | 718 |
| 21 | 26 |
| 22 | 40 |
| 23 | 2271 |
| 24 | 31802 |
| 25 | 91223 |
| 26 | 31802 |
| 27 | 2271 |
| 28 | 40 |
| 29 | 59 |
| 30 | 6654 |
| 31 | 256836 |
| 32 | 2111763 |
| 33 | 2111763 |
| 34 | 256836 |
| 35 | 6654 |
| 36 | 59 |
| 37 | 84 |
| 38 | 18191 |
| 39 | 1877283 |
| 40 | 45733593 |
| 41 | 136175057 |
| 42 | 45733593 |
| 43 | 1877283 |
| 44 | 18191 |
| 45 | 84 |
[0,4,4,4,16,4,10,56,56,10,16,211,378,211,16,26, 718,3699,3699,718,26,40,2271,31802,91223,31802, 2271,40,59,6654,256836,2111763,2111763,256836, 6654,59,84,18191,1877283,45733593,136175057, 45733593,1877283,18191,84] |