A001583Artiads: the primes p == 1 (mod 5) for which Fibonacci((p-1)/5) is divisible by p.
211, 281, 421, 461, 521, 691, 881, 991, 1031, 1151, 1511, 1601, 1871, 1951, 2221, 2591, …
The first term appear at position 93.
…640628620899862803482534211706798214808651328230664…
…634788995431771524379696211281224503426066399268852133…
| terms | string | first position | occurrences |
|---|---|---|---|
| 1 | 211 | 93 | 998,856 |
| 2 | 211281 | 114,142 | 997 |
| 3 | 211281421 | not within 1,000,000,000 | 0 |
| 4 | 211281421461 | not within 1,000,000,000 | 0 |
Searched the first 1,000,000,000 digits. Strings longer than 12 digits are not indexed.