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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 13 |
| 5 | 23 |
| 6 | 46 |
| 7 | 53 |
| 8 | 140 |
| 9 | 215 |
| 10 | 105 |
| 11 | 210 |
| 12 | 2808 |
| 13 | 2918 |
| 14 | 15593 |
| 15 | 21187 |
| 16 | 63556 |
| 17 | 7987 |
| 18 | 179118 |
| 19 | 358137 |
| 20 | 466945 |
| 21 | 420750 |
| 22 | 4034914 |
| 23 | 8068838 |
| 24 | 10946113 |
| 25 | 23445533 |
| 26 | 46880176 |
| 27 | 22406063 |
| 28 | 117663950 |
| 29 | 219078635 |
| 30 | 1060248229 |
| 31 | 2021396468 |
| 32 | 2632727628 |
| 33 | 2954399858 |
| 34 | 13837158803 |
[0,0,0,13,23,46,53,140,215,105,210,2808,2918, 15593,21187,63556,7987,179118,358137,466945, 420750,4034914,8068838,10946113,23445533,46880176, 22406063,117663950,219078635,1060248229, 2021396468,2632727628,2954399858,13837158803] |