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A014005 as a simple table
| n | a(n) |
|---|---|
| 0 | 9 |
| 1 | 19 |
| 2 | 40 |
| 3 | 84 |
| 4 | 176 |
| 5 | 369 |
| 6 | 774 |
| 7 | 1624 |
| 8 | 3407 |
| 9 | 7148 |
| 10 | 14997 |
| 11 | 31465 |
| 12 | 66016 |
| 13 | 138507 |
| 14 | 290599 |
| 15 | 609700 |
| 16 | 1279199 |
| 17 | 2683861 |
| 18 | 5630953 |
| 19 | 11814185 |
| 20 | 24787095 |
| 21 | 52005287 |
| 22 | 109111208 |
| 23 | 228923950 |
| 24 | 480300565 |
| 25 | 1007708598 |
| 26 | 2114252392 |
| 27 | 4435868847 |
| 28 | 9306803910 |
| 29 | 19526411174 |
| 30 | 40967956027 |
[9,19,40,84,176,369,774,1624,3407,7148,14997, 31465,66016,138507,290599,609700,1279199,2683861, 5630953,11814185,24787095,52005287,109111208, 228923950,480300565,1007708598,2114252392, 4435868847,9306803910,19526411174,40967956027] |