A002303Generalized tangent numbers.
16, 272, 3968, 56320, 814080, 12207360, 191431680, 3149752320, 54428774400, 987559372800, 18797300121600, 374883257548800, 7822865085235200, 170560590520320000, 3879770715684864000, 91945674412720128000
The first 2 terms appear at position 407,689.
…23846264338327950288419716939937510582097494459230…
…85703611816094139763446516272565828861687821301342558…
| terms | string | first position | occurrences |
|---|---|---|---|
| 1 | 16 | 40 | 10,001,877 |
| 2 | 16272 | 407,689 | 10,142 |
| 3 | 162723968 | not within 1,000,000,000 | 0 |
Searched the first 1,000,000,000 digits. Strings longer than 12 digits are not indexed.