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 A247252 Smallest integer k>=1 such that k*prime(n) is the sum of two successive primes. 2
 4, 4, 1, 6, 18, 4, 4, 8, 6, 24, 6, 6, 10, 4, 12, 24, 8, 20, 4, 12, 20, 28, 18, 8, 12, 18, 6, 12, 8, 22, 4, 6, 4, 12, 8, 6, 24, 6, 4, 36, 18, 36, 20, 4, 24, 20, 30, 4, 24, 6, 16, 52, 6, 18, 6, 30, 42, 18, 30, 24, 4, 6, 24, 6, 6, 8, 8, 6, 12, 12, 24, 8, 26, 12, 10, 16, 6, 12, 8, 42, 14, 10, 18, 6, 8, 12, 30, 36, 48, 22, 12, 14, 4, 12, 20, 16, 6, 6, 6, 20 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Except for a(3)=1, all terms are even and >= 4. LINKS Zak Seidov, Table of n, a(n) for n = 1..1000 FORMULA a(n) = A203836(n)/prime(n). EXAMPLE If n=1, prime(1)=2, and 4*2 = 8 = 3+5 is the sum of two consecutive primes, thus a(1) = 4. CROSSREFS Cf. A000040, A001043, A203836, A247245. Sequence in context: A263493 A166237 A021878 * A016495 A335826 A337191 Adjacent sequences:  A247249 A247250 A247251 * A247253 A247254 A247255 KEYWORD nonn AUTHOR Zak Seidov, Nov 29 2014 STATUS approved

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Last modified August 3 21:03 EDT 2021. Contains 346441 sequences. (Running on oeis4.)