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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 19 |
| 4 | 97 |
| 5 | 116 |
| 6 | 329 |
| 7 | 774 |
| 8 | 1103 |
| 9 | 1877 |
| 10 | 8611 |
| 11 | 27710 |
| 12 | 36321 |
| 13 | 499883 |
| 14 | 536204 |
| 15 | 2108495 |
| 16 | 8970184 |
| 17 | 11078679 |
| 18 | 20048863 |
| 19 | 51176405 |
| 20 | 122401673 |
| 21 | 173578078 |
| 22 | 990292063 |
| 23 | 9086206645 |
| 24 | 10076498708 |
| 25 | 19162705353 |
| 26 | 546632248592 |
| 27 | 565794953945 |
| 28 | 1112427202537 |
| 29 | 10577639776778 |
| 30 | 54000626086427 |
[1,1,2,19,97,116,329,774,1103,1877,8611,27710, 36321,499883,536204,2108495,8970184,11078679, 20048863,51176405,122401673,173578078,990292063, 9086206645,10076498708,19162705353,546632248592, 565794953945,1112427202537,10577639776778, 54000626086427] |