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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 2 |
| 2 | 34 |
| 3 | 246 |
| 4 | 1028 |
| 5 | 3130 |
| 6 | 7782 |
| 7 | 16814 |
| 8 | 32776 |
| 9 | 59058 |
| 10 | 100010 |
| 11 | 161062 |
| 12 | 248844 |
| 13 | 371306 |
| 14 | 537838 |
| 15 | 759390 |
| 16 | 1048592 |
| 17 | 1419874 |
| 18 | 1889586 |
| 19 | 2476118 |
| 20 | 3200020 |
| 21 | 4084122 |
| 22 | 5153654 |
| 23 | 6436366 |
| 24 | 7962648 |
| 25 | 9765650 |
| 26 | 11881402 |
| 27 | 14348934 |
| 28 | 17210396 |
| 29 | 20511178 |
[0,2,34,246,1028,3130,7782,16814,32776,59058, 100010,161062,248844,371306,537838,759390,1048592, 1419874,1889586,2476118,3200020,4084122,5153654, 6436366,7962648,9765650,11881402,14348934, 17210396,20511178] |