This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A067354 Numbers n such that prime(n+2)-(n+2)*tau(n+2)=prime(n-2)-(n-2)*tau(n-2) where tau(n) is the number of divisors of n A000005(n). 0
 3, 8, 30, 68, 277, 600, 1444, 2123, 3128, 3230, 3672, 3783, 4441, 5016, 5052, 5144, 5304, 5665, 6353, 6468, 6513, 6588, 6772, 6983, 7044, 7087, 8392, 8418, 8632, 8866, 9217, 9264, 9292, 9540, 9917, 9949, 10495, 11429, 11532, 13474, 14063, 15431 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS MATHEMATICA Select[Range[3, 16000], Prime[#-2]-(#-2)DivisorSigma[0, #-2]==Prime[#+2]-(#+2)DivisorSigma[0, #+2]&] (* Harvey P. Dale, Dec 20 2015 *) CROSSREFS Cf. A000005. Sequence in context: A289486 A245361 A247340 * A148877 A148878 A148879 Adjacent sequences:  A067351 A067352 A067353 * A067355 A067356 A067357 KEYWORD easy,nonn AUTHOR Benoit Cloitre, Feb 24 2002 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified October 23 17:32 EDT 2019. Contains 328373 sequences. (Running on oeis4.)