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| n | a(n) |
|---|---|
| 1 | 179 |
| 2 | 539 |
| 3 | 1838 |
| 4 | 6110 |
| 5 | 20928 |
| 6 | 72639 |
| 7 | 250704 |
| 8 | 868395 |
| 9 | 3018347 |
| 10 | 10479598 |
| 11 | 36378224 |
| 12 | 126375034 |
| 13 | 439060517 |
| 14 | 1525204952 |
| 15 | 5298346147 |
| 16 | 18406546077 |
| 17 | 63945299048 |
| 18 | 222148717950 |
| 19 | 771751048840 |
| 20 | 2681087539315 |
| 21 | 9314216969134 |
| 22 | 32358021118021 |
[179,539,1838,6110,20928,72639,250704,868395, 3018347,10479598,36378224,126375034,439060517, 1525204952,5298346147,18406546077,63945299048, 222148717950,771751048840,2681087539315, 9314216969134,32358021118021] |