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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 20 |
| 2 | 92 |
| 3 | 292 |
| 4 | 742 |
| 5 | 1624 |
| 6 | 3192 |
| 7 | 5784 |
| 8 | 9834 |
| 9 | 15884 |
| 10 | 24596 |
| 11 | 36764 |
| 12 | 53326 |
| 13 | 75376 |
| 14 | 104176 |
| 15 | 141168 |
| 16 | 187986 |
| 17 | 246468 |
| 18 | 318668 |
| 19 | 406868 |
| 20 | 513590 |
| 21 | 641608 |
| 22 | 793960 |
| 23 | 973960 |
| 24 | 1185210 |
| 25 | 1431612 |
| 26 | 1717380 |
| 27 | 2047052 |
| 28 | 2425502 |
| 29 | 2857952 |
| 30 | 3349984 |
| 31 | 3907552 |
[2,20,92,292,742,1624,3192,5784,9834,15884,24596, 36764,53326,75376,104176,141168,187986,246468, 318668,406868,513590,641608,793960,973960,1185210, 1431612,1717380,2047052,2425502,2857952,3349984, 3907552] |