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A087012 Numbers n such that the number of primes of form 4n+1 between n and 2n equals the number of primes of form 4n+3 between n and 2n (inclusive). 2
1, 3, 4, 5, 8, 10, 11, 12, 13, 15, 20, 22, 23, 24, 25, 26, 31, 34, 35, 37, 49, 50, 52, 53, 57, 58, 59, 62, 63, 69, 72, 73, 75, 79, 82, 83, 84, 85, 86, 91, 92, 93, 94, 95, 97, 99, 141, 147, 148, 149, 152, 153, 164, 165, 168, 175, 176, 182, 183, 187, 188, 189, 200, 244, 245 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..65.

CROSSREFS

Cf. A035250, A087010, A087011.

Sequence in context: A066906 A125884 A001602 * A047366 A184776 A202104

Adjacent sequences:  A087009 A087010 A087011 * A087013 A087014 A087015

KEYWORD

nonn

AUTHOR

Jason Earls, Jul 30 2003

STATUS

approved

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Last modified May 22 19:19 EDT 2019. Contains 323481 sequences. (Running on oeis4.)