A185591 - OEIS

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A185591

Primes in continued fraction expansion of Pi (A001203).

3, 7, 2, 3, 2, 2, 2, 2, 2, 2, 3, 13, 2, 2, 2, 3, 5, 7, 2, 3, 7, 2, 3, 2, 5, 2, 2, 3, 2, 2, 2, 2, 2, 3, 2, 2, 5, 2, 2, 5, 2, 2, 2, 2, 7, 3, 3, 7, 2, 7, 2, 3, 19, 2, 3, 7, 3, 3, 3, 2, 2, 2, 13, 2, 3, 3, 3, 2, 5, 3, 2, 2, 3, 23, 3, 7, 2, 2, 2, 127, 5, 3, 13, 7, 5, 3, 29, 3, 2, 2, 3, 3, 3, 3, 2, 7, 2, 11, 3, 7, 5, 2, 3, 2, 3, 2, 2, 2

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OFFSET

1,1

LINKS

G. C. Greubel, Table of n, a(n) for n = 1..5000

MAPLE

Digits := 600: p1 := convert(Pi, confrac, 300): select(isprime, p1);

MATHEMATICA

Select[ContinuedFraction[Pi, 500], PrimeQ] (* Harvey P. Dale, Jan 22 2012 *)

CROSSREFS

Cf. A185809.

Sequence in context: A182502 A059818 A374829 * A023525 A090688 A334959

Adjacent sequences: A185588 A185589 A185590 * A185592 A185593 A185594

KEYWORD

nonn

AUTHOR

Jani Melik, Feb 04 2011

STATUS

approved