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A158323 Greaters p2 of twin primes with equal number of odd digits of p1 and prime digits of p2. 0
5, 7, 31, 43, 73, 433, 463, 571, 643, 829, 883, 1231, 1723, 2089, 2131, 2143, 2311, 2593, 2659, 2689, 2713, 2791, 2971, 3259, 3331, 3373, 3463, 3529, 3583, 3673, 3853, 4003, 4051, 4483, 4651, 5443, 5503, 5653, 5743, 5851, 6451, 6553, 6571, 6703, 6763 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The greater member of a twin prime pair such that the count of its digits is a prime number and equal to the count of odd digits in the smaller member. [From R. J. Mathar, May 19 2010]

LINKS

Table of n, a(n) for n=1..45.

EXAMPLE

If p1=29 and p2=31, then 1(9=odd)=1(3=prime) and 31=a(3). If p1=41 and p2=43, then 1(1=odd)=1(3=prime) and 43=a(4). If p1=71 and p2=73, then 2(7=odd and 1=odd)=2(7=prime and 3=prime) and 73=a(5).

CROSSREFS

Cf. A006512.

Sequence in context: A135324 A107639 A069688 * A025119 A025095 A025114

Adjacent sequences:  A158320 A158321 A158322 * A158324 A158325 A158326

KEYWORD

nonn,base,less

AUTHOR

Juri-Stepan Gerasimov, Mar 16 2009

EXTENSIONS

Corrected (2131 inserted, 2533 replaced by 2593, 2659 inserted, 4231 removed etc.) by R. J. Mathar, May 19 2010

STATUS

approved

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Last modified August 7 10:34 EDT 2020. Contains 336275 sequences. (Running on oeis4.)