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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 4 |
| 2 | 12 |
| 3 | 24 |
| 4 | 50 |
| 5 | 92 |
| 6 | 172 |
| 7 | 296 |
| 8 | 510 |
| 9 | 840 |
| 10 | 1372 |
| 11 | 2176 |
| 12 | 3424 |
| 13 | 5268 |
| 14 | 8040 |
| 15 | 12072 |
| 16 | 17976 |
| 17 | 26428 |
| 18 | 38564 |
| 19 | 55680 |
| 20 | 79846 |
| 21 | 113500 |
| 22 | 160320 |
| 23 | 224768 |
| 24 | 313320 |
| 25 | 433916 |
| 26 | 597788 |
| 27 | 818840 |
| 28 | 1116238 |
| 29 | 1513900 |
| 30 | 2044180 |
| 31 | 2747520 |
| 32 | 3677864 |
| 33 | 4902732 |
| 34 | 6510960 |
| 35 | 8613840 |
| 36 | 11356208 |
[2,4,12,24,50,92,172,296,510,840,1372,2176,3424, 5268,8040,12072,17976,26428,38564,55680,79846, 113500,160320,224768,313320,433916,597788,818840, 1116238,1513900,2044180,2747520,3677864,4902732, 6510960,8613840,11356208] |