A083697a(n) = 2^(2^n - 1) * Fibonacci(2^n).
1, 2, 24, 2688, 32342016, 4677882957791232, 97861912906883207538212742365184, 42829440312913272520181533609472356498655100482256687829780267008
The first 2 terms appear at position 148.
1415926535897932384626433…
…84460955058223172535940812848111745028410270193852…
…9609173637178721468440901224953430146549585371050792…
…76514837494775810781821312242688792926898917875649737104…
| terms | string | first position | occurrences |
|---|---|---|---|
| 1 | 1 | 1 | 99,997,334 |
| 2 | 12 | 148 | 10,000,708 |
| 3 | 1224 | 660 | 99,981 |
| 4 | 12242688 | 62,040,758 | 5 |
Searched the first 1,000,000,000 digits. Strings longer than 12 digits are not indexed.