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 A154273 Primes of the form: nonprime(prime(n)) + n. 1
 2, 11, 79, 97, 109, 127, 151, 239, 313, 557, 599, 661, 719, 733, 797, 839, 1051, 1061, 1097, 1171, 1259, 1283, 1303, 1453, 1559, 1621, 1973, 1999, 2011, 2111, 2213, 2267, 2311, 2383, 2437, 2539, 2621, 2719, 2767, 2879, 2957, 3083, 3137, 3313, 3433, 3607 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Where n-th "prime nonprime"=A141468(A000040(n)) and 1st "prime nonprime" = 0. LINKS Table of n, a(n) for n=1..46. EXAMPLE For n=1, nonprime(prime(1))+1 = nonprime(2)+1 = 1+1 = 2 (prime), so a(1)=2. For n=2, nonprime(prime(2))+2 = nonprime(3)+2 = 4+2 = 6 (composite). For n=3, nonprime(prime(3))+3 = nonprime(5)+3 = 8+3 = 11 (prime), so a(2)=11, etc. MAPLE A154273 := proc(n) c := A141468(ithprime(n)) ; p := n+c ; if isprime(p) then printf("%d, ", p) ; end if; end proc: seq(A154273(n), n=1..700) ; # R. J. Mathar, May 01 2010 CROSSREFS Cf. A000040, A141468. Sequence in context: A079266 A094569 A151418 * A253256 A163203 A142722 Adjacent sequences: A154270 A154271 A154272 * A154274 A154275 A154276 KEYWORD nonn AUTHOR Juri-Stepan Gerasimov, Jan 06 2009 EXTENSIONS Corrected (787 replaced by 797) and extended by R. J. Mathar, May 01 2010 STATUS approved

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Last modified August 12 17:00 EDT 2024. Contains 375113 sequences. (Running on oeis4.)