The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 28 |
| 2 | 784 |
| 3 | 15340 |
| 4 | 245055 |
| 5 | 3516324 |
| 6 | 47735665 |
| 7 | 630339756 |
| 8 | 8213689391 |
| 9 | 106375878027 |
| 10 | 1373916879120 |
| 11 | 17723771318006 |
| 12 | 228519337975633 |
| 13 | 2945698436819118 |
| 14 | 37967141667302902 |
| 15 | 489335430219899681 |
| 16 | 6306607945054850639 |
[28,784,15340,245055,3516324,47735665,630339756, 8213689391,106375878027,1373916879120, 17723771318006,228519337975633,2945698436819118, 37967141667302902,489335430219899681, 6306607945054850639] |