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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 31 |
| 2 | 617 |
| 3 | 10067 |
| 4 | 146913 |
| 5 | 1999083 |
| 6 | 25952089 |
| 7 | 325901779 |
| 8 | 3994115345 |
| 9 | 48056935355 |
| 10 | 570022255881 |
| 11 | 6685284487011 |
| 12 | 77695022872897 |
| 13 | 896253234623947 |
| 14 | 10275099966705593 |
| 15 | 117190651899653363 |
| 16 | 1330751148294893169 |
[1,31,617,10067,146913,1999083,25952089,325901779, 3994115345,48056935355,570022255881,6685284487011, 77695022872897,896253234623947,10275099966705593, 117190651899653363,1330751148294893169] |