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A216289 Smallest k in which there are exactly n primes between 10*k and 10*k+9. 0
20, 9, 2, 4, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..4.

MATHEMATICA

mx = 5; t = Table[-1, {mx}]; n = 0; found = 0; While[found < mx, ps = Select[Range[10*n, 10*n + 9], PrimeQ]; len = Length[ps]; If[t[[len + 1]] == -1, t[[len + 1]] = n; found++]; n++]; t (* T. D. Noe, Sep 03 2012 *)

CROSSREFS

Cf. A186311, A032352, A007811, A078494.

Sequence in context: A123174 A040384 A078080 * A136010 A091534 A033966

Adjacent sequences:  A216286 A216287 A216288 * A216290 A216291 A216292

KEYWORD

nonn,fini,full

AUTHOR

V. Raman, Sep 03 2012

STATUS

approved

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Last modified March 30 10:09 EDT 2020. Contains 333125 sequences. (Running on oeis4.)