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| n | a(n) |
|---|---|
| 0 | 4 |
| 1 | 1 |
| 2 | 7 |
| 3 | 4 |
| 4 | 19 |
| 5 | 16 |
| 6 | 58 |
| 7 | 64 |
| 8 | 187 |
| 9 | 247 |
| 10 | 622 |
| 11 | 925 |
| 12 | 2110 |
| 13 | 3394 |
| 14 | 7252 |
| 15 | 12289 |
| 16 | 25147 |
| 17 | 44116 |
| 18 | 87727 |
| 19 | 157492 |
| 20 | 307294 |
| 21 | 560200 |
| 22 | 1079371 |
| 23 | 1987891 |
| 24 | 3798310 |
| 25 | 7043041 |
| 26 | 13382818 |
| 27 | 24927430 |
| 28 | 47191492 |
| 29 | 88165105 |
| 30 | 166501903 |
| 31 | 311686804 |
| 32 | 587670811 |
| 33 | 1101562312 |
[4,1,7,4,19,16,58,64,187,247,622,925,2110,3394, 7252,12289,25147,44116,87727,157492,307294,560200, 1079371,1987891,3798310,7043041,13382818,24927430, 47191492,88165105,166501903,311686804,587670811, 1101562312] |