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A090201
a(n) = p-th digit of Pi where p = n-th prime.
3
1, 4, 5, 2, 5, 9, 2, 8, 6, 2, 9, 4, 1, 9, 3, 8, 9, 4, 7, 4, 6, 8, 6, 8, 7, 9, 2, 0, 6, 2, 4, 5, 2, 1, 1, 8, 7, 4, 7, 5, 5, 9, 9, 4, 3, 1, 5, 8, 6, 8, 7, 1, 5, 1, 5, 4, 6, 0, 6, 2, 3, 2, 7, 6, 6, 5, 0, 9, 3, 4, 8, 3, 0, 8, 6, 3, 9, 1, 4, 0, 9, 3, 3, 1, 1, 1, 5, 2, 9, 2, 5, 7, 7, 1, 9, 8, 3, 0, 6, 7, 2, 7, 5, 1, 6
OFFSET
2,2
COMMENTS
The prime-th digits of Pi.
EXAMPLE
The 5th prime is 11. The 11th digit of pi is 5, the 5th term in the sequence.
MATHEMATICA
With[{nn=600}, Pick[RealDigits[Pi, 10, nn][[1]], If[PrimeQ[#], 1, 0]&/@ Range[nn], 1]] (* Harvey P. Dale, Apr 22 2012 *)
PROG
(PARI) \primeth.gp primeth(n) = { default(realprecision, 1000); p=Str(Pi*10^999); default(realprecision, 28); forprime(x=2, n, print1(mid(p, x, 1)", ") ) } mid(str, s, n) = { v =""; tmp = Vec(str); ln=length(tmp); for(x=s, s+n-1, v=concat(v, tmp[x]); ); return(v) }
CROSSREFS
Sequence in context: A021225 A292820 A178040 * A130144 A354634 A118472
KEYWORD
easy,nonn,base
AUTHOR
Cino Hilliard, Jan 22 2004
STATUS
approved