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| n | a(n) |
|---|---|
| 1 | 3492 |
| 2 | 12156 |
| 3 | 42400 |
| 4 | 147984 |
| 5 | 516652 |
| 6 | 1804128 |
| 7 | 6301554 |
| 8 | 22009836 |
| 9 | 76884550 |
| 10 | 268579888 |
| 11 | 938237580 |
| 12 | 3277608092 |
| 13 | 11449981646 |
| 14 | 39999390704 |
| 15 | 139734492670 |
| 16 | 488151637034 |
| 17 | 1705321234646 |
| 18 | 5957415743556 |
| 19 | 20811807878768 |
| 20 | 72704583358670 |
[3492,12156,42400,147984,516652,1804128,6301554, 22009836,76884550,268579888,938237580,3277608092, 11449981646,39999390704,139734492670,488151637034, 1705321234646,5957415743556,20811807878768, 72704583358670] |