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 A115095 Positions of 4 in A038800. 0
 1, 2, 11, 20, 83, 149, 188, 209, 326, 347, 566, 944, 1301, 1565, 1574, 1607, 1805, 1892, 1943, 2102, 2228, 2531, 3173, 3485, 4379, 5135, 5534, 6299, 6722, 6950, 7223, 7727, 7970, 8105, 8273, 8882, 9785, 9914, 10112, 10985, 11654, 11930, 12221, 13547 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Starting with a(2)=2, numbers m such that 10(m-1)+{1,3,7,9} are all primes. Essentially the same as A064975. [From R. J. Mathar, Aug 11 2008] REFERENCES 4 is maximal possible number of primes between 10n and 10(n+1). LINKS EXAMPLE 11 is OK because 10(11-1)+{1,3,7,9} = 101,103,107,109 all prime. CROSSREFS Cf. A038800 Number of primes between 10n and 10n+9. Cf. A038800. Sequence in context: A226416 A146087 A064975 * A061907 A052216 A094629 Adjacent sequences:  A115092 A115093 A115094 * A115096 A115097 A115098 KEYWORD nonn AUTHOR Zak Seidov, Mar 01 2006 STATUS approved

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Last modified March 19 13:08 EDT 2019. Contains 321330 sequences. (Running on oeis4.)