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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 200 |
| 3 | 611 |
| 4 | 1227 |
| 5 | 2291 |
| 6 | 4620 |
| 7 | 8180 |
| 8 | 14364 |
| 9 | 27927 |
| 10 | 48671 |
| 11 | 84711 |
| 12 | 163760 |
| 13 | 284664 |
| 14 | 494720 |
| 15 | 955451 |
| 16 | 1660131 |
| 17 | 2884427 |
| 18 | 5569764 |
| 19 | 9676940 |
| 20 | 16812660 |
| 21 | 32463951 |
| 22 | 56402327 |
| 23 | 97992351 |
| 24 | 189214760 |
| 25 | 328737840 |
| 26 | 571142264 |
| 27 | 1102825427 |
| 28 | 1916025531 |
| 29 | 3328862051 |
| 30 | 6427738620 |
[0,200,611,1227,2291,4620,8180,14364,27927,48671, 84711,163760,284664,494720,955451,1660131,2884427, 5569764,9676940,16812660,32463951,56402327, 97992351,189214760,328737840,571142264,1102825427, 1916025531,3328862051,6427738620] |