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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 19 |
| 3 | 634 |
| 4 | 47649 |
| 5 | 6274106 |
| 6 | 1266115531 |
| 7 | 361443760434 |
| 8 | 138409787933185 |
| 9 | 68440264233480946 |
| 10 | 42456829504270563171 |
| 11 | 32298905491751788363178 |
| 12 | 29579335193166396705350113 |
| 13 | 32110930501835244252851667114 |
| 14 | 40785711234701383731234426737563 |
| 15 | 59935074121681733668842271720802146 |
| 16 | 100911303134764806288521563626921325569 |
[1,2,19,634,47649,6274106,1266115531,361443760434, 138409787933185,68440264233480946, 42456829504270563171,32298905491751788363178, 29579335193166396705350113, 32110930501835244252851667114, 40785711234701383731234426737563, 59935074121681733668842271720802146, 100911303134764806288521563626921325569] |