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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 8 |
| 4 | 10 |
| 5 | 19 |
| 6 | 64 |
| 7 | 1471 |
| 8 | 3161 |
| 9 | 3028 |
| 10 | 6397 |
| 11 | 27956 |
| 12 | 58307 |
| 13 | 168652 |
| 14 | 190031 |
| 15 | 794076401 |
| 16 | 817191437 |
| 17 | 57056556523 |
| 18 | 65776878541 |
| 19 | 112508501827291 |
| 20 | 32836043478431 |
| 21 | 24620974441660973 |
| 22 | 30663050241335933 |
| 23 | 280904716386831931 |
| 24 | 1713934856212591039 |
| 25 | 12438570098319186469 |
[0,1,2,8,10,19,64,1471,3161,3028,6397,27956,58307, 168652,190031,794076401,817191437,57056556523, 65776878541,112508501827291,32836043478431, 24620974441660973,30663050241335933, 280904716386831931,1713934856212591039, 12438570098319186469] |