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A112230 Sequence of Chen primes of the form (x*n+1)*(y*n+1)-2 in the order generated by A112229. 1
13, 13, 89, 83, 449, 89, 5711, 1511, 701, 449, 8117, 479, 27611, 5711, 1889, 10079, 241739, 701, 145349, 4139, 14489, 8117, 28151, 7079, 25349, 27611, 29537, 5711, 85607, 1889, 212411, 18719, 13331, 241739, 19949, 2699, 220667, 145349, 12401 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
FORMULA
a(n) = (A112229(n,1)*n+1)*(A112229(n,2)*n+1)-2.
EXAMPLE
For n=3 2*3+1=7 prime, 4*3+1=13 prime, 7*13-2=89 a Chen prime
CROSSREFS
Cf. A112229.
Sequence in context: A071612 A059796 A214468 * A121932 A154706 A294077
KEYWORD
nonn
AUTHOR
Pierre CAMI, Aug 29 2005
STATUS
approved

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Last modified September 12 05:07 EDT 2024. Contains 375842 sequences. (Running on oeis4.)