Quote:
Originally Posted by LaurV

Ah, yes, the "primes in π" thread.
Since a(n) is standard notation for OEIS sequences, I had tried such sequences related to digits of pi.
The Wolfram Mathworld page on
Pi Digits lists URLs of the the OEIS sequences a(n) for first occurrence of n consecutive decimal digits d, d = 0 to 9, in the decimal expansion of pi.
The largest value of n in any of these, however, is n = 14, for d = 0, 5, 7, and 9. These are in the first 1.21 x 10
^{13} digits.
I suppose there might be a small chance of finding a(15) in one of these sequences among the first 6.28 x 10
^{13} digits.