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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 6 |
| 3 | 13 |
| 4 | 35 |
| 5 | 91 |
| 6 | 214 |
| 7 | 491 |
| 8 | 1151 |
| 9 | 2711 |
| 10 | 6290 |
| 11 | 14427 |
| 12 | 33010 |
| 13 | 75444 |
| 14 | 171786 |
| 15 | 389500 |
| 16 | 880533 |
| 17 | 1986357 |
| 18 | 4471290 |
| 19 | 10042661 |
| 20 | 22511404 |
| 21 | 50374282 |
| 22 | 112545858 |
| 23 | 251073154 |
| 24 | 559324988 |
| 25 | 1244426930 |
| 26 | 2765391188 |
| 27 | 6138444816 |
| 28 | 13611448023 |
| 29 | 30152472569 |
| 30 | 66732950720 |
| 31 | 147563807981 |
| 32 | 326033813397 |
[1,3,6,13,35,91,214,491,1151,2711,6290,14427, 33010,75444,171786,389500,880533,1986357,4471290, 10042661,22511404,50374282,112545858,251073154, 559324988,1244426930,2765391188,6138444816, 13611448023,30152472569,66732950720,147563807981, 326033813397] |