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A095355 Ratio A095106(n)/A095093(n) rounded down. 2
0, 0, 0, 3, 3, 5, 15, 13, 10, 13, 25, 22, 97, 85, 203, 359, 625, 1067, 1880, 3166, 6068 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

This is the average diving index for those 4k+3 primes in range ]2^n,2^(n+1)] that "dive". See A095103.

The ratios before rounding are: 0, 0, 0, 3, 3, 5.666667, 15.666667, 13.166667, 10.142857, 13.926829, 25.805195, 22.118881, 97.536585, 85.237736, 203.39802, 359.470768, 625.039342, 1067.145123, 1880.907721, 3166.124599, 6068.683879.

Ratio (A095106(n)/A095093(n))/(A095109(n)/A095091(n)) starts as follows: 0, 0, 0, 1, 0.5, 0.428571, 0.4, 0.387097, 0.308824, 0.277027, 0.248387, 0.215361, 0.213383, 0.191474, 0.178036, 0.169496, 0.156814, 0.148329, 0.141456, 0.134383.

LINKS

Table of n, a(n) for n=1..21.

FORMULA

a(n) = 0 if A095093(n) is 0, otherwise a(n) = floor(A095106(n)/A095093(n).

CROSSREFS

A095356 gives the same ratios rounded to nearest integer. A095359 gives similar ratios computed for all 4k+3 integers.

Sequence in context: A052898 A183483 A218663 * A069834 A064038 A051684

Adjacent sequences:  A095352 A095353 A095354 * A095356 A095357 A095358

KEYWORD

nonn

AUTHOR

Antti Karttunen, Jun 12 2004

STATUS

approved

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Last modified October 15 22:25 EDT 2019. Contains 328038 sequences. (Running on oeis4.)