The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 16 |
| 4 | 2195 |
| 5 | 4096 |
| 6 | 244140908 |
| 7 | 1679616 |
| 8 | 4747561789943 |
| 9 | 549755815184 |
| 10 | 150094635297261390 |
| 11 | 1000000000000 |
| 12 | 144209936106499235037680851362 |
| 13 | 1283918464548864 |
| 14 | 542800770374370513201577400 |
| 15 | 3214199700417740936754083600 |
| 16 | 2876265888493261300182938548474503919 |
[0,1,16,2195,4096,244140908,1679616,4747561789943, 549755815184,150094635297261390,1000000000000, 144209936106499235037680851362,1283918464548864, 542800770374370513201577400, 3214199700417740936754083600, 2876265888493261300182938548474503919] |