The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A158314 Consider a twin prime pair (p, q=p+2) such that the number of prime digits in p is equal to the number of odd digits in q; sequence lists values of p. 0
 3, 5, 59, 281, 347, 521, 599, 659, 821, 857, 1277, 1427, 2081, 2381, 2729, 2801, 3251, 3359, 3467, 3539, 3557, 3767, 3821, 4127, 4217, 4229, 4241, 4271, 4337, 4421, 4547, 4637, 4721, 4787, 4799, 5021, 5231, 5477, 5639, 5657, 5867, 5879, 6359, 6659, 6779 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS MATHEMATICA npdQ[{m_, n_}]:=Module[{r=Count[IntegerDigits[m], _?PrimeQ]}, n-m==2&&r==Count[IntegerDigits[n], _?OddQ]]; Select[Partition[ Prime[ Range[ 1000]], 2, 1], npdQ][[All, 1]] (* Harvey P. Dale, May 18 2019 *) CROSSREFS Cf. A001359. Sequence in context: A106914 A049190 A174920 * A249011 A261533 A118477 Adjacent sequences:  A158311 A158312 A158313 * A158315 A158316 A158317 KEYWORD nonn,base,less AUTHOR Juri-Stepan Gerasimov, Mar 16 2009 EXTENSIONS Better definition from and data corrected (2381 to 3359 inserted) by R. J. Mathar, May 19 2010 Definition edited by N. J. A. Sloane, May 18 2019 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 August 9 20:09 EDT 2020. Contains 336326 sequences. (Running on oeis4.)