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Centuries whose prime pattern is the same as prime pattern in the previous century.
3

%I #11 May 13 2013 01:50:09

%S 473268,726761,1773440,1808829,1919129,2131584,2165421,2339972,

%T 2390653,2518489,2802592,2844915,2982585,2996185,3183264,3193176,

%U 3250987,3418186,3428242,3633473,3909325,3953450,4280456,4303820,4373400,4658286,4728654,4978361,5165403,5254366

%N Centuries whose prime pattern is the same as prime pattern in the previous century.

%C x belongs to this sequence if and only if the primality character of (100 * (x-1)) + k is the same as (100 * x) + k for all k = 0..99.

%F a(n) ~ n. In particular there are x - 200x/log x + O(x/log^2 x) members of this sequence below x. - _Charles R Greathouse IV_, Dec 09 2012

%F a(n) = A190639(n) + 1.

%Y Cf. A181098.

%Y Cf. A190639 (lower century).

%K nonn,base

%O 1,1

%A _V. Raman_, Dec 08 2012