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| n | a(n) |
|---|---|
| 1 | 49 |
| 2 | 176 |
| 3 | 661 |
| 4 | 2540 |
| 5 | 9858 |
| 6 | 38440 |
| 7 | 150208 |
| 8 | 587527 |
| 9 | 2299087 |
| 10 | 8998528 |
| 11 | 35223120 |
| 12 | 137880423 |
| 13 | 539741489 |
| 14 | 2112870328 |
| 15 | 8271068957 |
| 16 | 32378091171 |
| 17 | 126748027162 |
| 18 | 496170960208 |
| 19 | 1942323447926 |
| 20 | 7603469333490 |
| 21 | 29764737739051 |
| 22 | 116517814264327 |
[49,176,661,2540,9858,38440,150208,587527,2299087, 8998528,35223120,137880423,539741489,2112870328, 8271068957,32378091171,126748027162,496170960208, 1942323447926,7603469333490,29764737739051, 116517814264327] |