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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 13 |
| 3 | 301 |
| 4 | 13049 |
| 5 | 916441 |
| 6 | 94195333 |
| 7 | 13347584069 |
| 8 | 2494336502897 |
| 9 | 594306468307633 |
| 10 | 175843898741580413 |
| 11 | 63256176039805178717 |
| 12 | 27187896853252573010537 |
| 13 | 13760130793027073955444361 |
| 14 | 8099868218813257097451686389 |
| 15 | 5486947453030516571774107669621 |
| 16 | 4238147510641905386674640667028193 |
| 17 | 3702563543334459672543167863851104609 |
| 18 | 3632508681950057312629014573578376827629 |
| 19 | 3976725158932698015861683248077453527809421 |
[1,1,13,301,13049,916441,94195333,13347584069, 2494336502897,594306468307633,175843898741580413, 63256176039805178717,27187896853252573010537, 13760130793027073955444361, 8099868218813257097451686389, 5486947453030516571774107669621, 4238147510641905386674640667028193, 3702563543334459672543167863851104609, 3632508681950057312629014573578376827629, 3976725158932698015861683248077453527809421] |