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A020935 Greatest k such that (k-th prime) < (5 times n-th prime). 1

%I

%S 4,6,9,11,16,18,23,24,30,34,36,42,46,47,51,56,62,62,67,71,72,77,80,86,

%T 92,96,97,99,100,103,115,119,124,125,132,133,137,141,145,150,154,154,

%U 162,162,166,167,177,186,189,189,192,196,197,204,208,214,217,217,221

%N Greatest k such that (k-th prime) < (5 times n-th prime).

%o (PARI) a(n) = primepi(5*prime(n)) \\ _Michel Marcus_, May 13 2013

%Y Cf. A020900, A020901, A020934-A020940.

%K nonn

%O 1,1

%A _Clark Kimberling_

%E More terms from _Henry Bottomley_, Nov 13 2000

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Last modified April 20 09:59 EDT 2019. Contains 322309 sequences. (Running on oeis4.)