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| n | a(n) |
|---|---|
| 1 | 16 |
| 2 | 69 |
| 3 | 47 |
| 4 | 191 |
| 5 | 644 |
| 6 | 1604 |
| 7 | 4924 |
| 8 | 16163 |
| 9 | 46665 |
| 10 | 147161 |
| 11 | 473990 |
| 12 | 1426413 |
| 13 | 4457882 |
| 14 | 14198499 |
| 15 | 43560735 |
| 16 | 135447041 |
| 17 | 428338946 |
| 18 | 1325938859 |
| 19 | 4119939406 |
| 20 | 12959149210 |
| 21 | 40295382899 |
| 22 | 125292141007 |
| 23 | 392705745087 |
| 24 | 1223726360479 |
| 25 | 3808516672382 |
[16,69,47,191,644,1604,4924,16163,46665,147161, 473990,1426413,4457882,14198499,43560735, 135447041,428338946,1325938859,4119939406, 12959149210,40295382899,125292141007,392705745087, 1223726360479,3808516672382] |