Position of the first n-digit prime in the digits of sqrt(Pi).
2, 1, 9, 18, 27, 16, 5, 22, 53, 2, 9, 46, 46, 8, 79, 4, 64, 40, 11, 6, 32, 47, 6, 27, 19, 68, 162, 26, 29, 18, 228, 152, 36, 37, 19, 180, 73, 15, 141, 86, 3, 187, 41, 281, 9, 48, 79, 287, 322, 31, 176, 137, 526, 328, 500, 38, 22, 321, 22, 226, 256, 41, 103, 228
1
The n-digit primes are given in S000714.
T. D. Noe, Plot of 300 terms
T. D. Noe, Table of 300 terms
Wikipedia, Pi
(Mma) d = RealDigits[Sqrt[Pi], 10, 1000]; t = {}; n = 1; While[d1 = Partition[d[[1]], n, 1]; s = Select[d1, Ceiling[Log[10, FromDigits[#]]] == n && PrimeQ[FromDigits[#]] &, 1]; s != {}, AppendTo[t, {FromDigits[s[[1]]], Position[d1, s[[1]], 1, 1][[1, 1]]}]; n++]; Transpose[t][[2]]
Cf. S000714.
nonn
T. D. Noe, Oct 06 2015