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 A173232 Numbers k such that k and k+2 are both members of A002822. 1
 1, 3, 5, 10, 23, 30, 38, 45, 70, 135, 170, 175, 213, 215, 268, 355, 465, 560, 588, 653, 703, 705, 710, 773, 798, 835, 940, 978, 1115, 1130, 1158, 1258, 1370, 1500, 1570, 1843, 1860, 2040, 2280, 2285, 2333, 2425, 2985, 3008, 3020, 3598, 3600, 3838, 4375, 4450, 4480 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS EXAMPLE a(1)=1 because 1 and 3 are both in A002822. PROG (PARI) isokp(n) = isprime(6*n-1) && isprime(6*n+1); isok(k) = isokp(k) && isokp(k+2); \\ Michel Marcus, May 15 2020 CROSSREFS Cf. A002822, A173233. Sequence in context: A102772 A018005 A080522 * A132332 A209001 A240619 Adjacent sequences:  A173229 A173230 A173231 * A173233 A173234 A173235 KEYWORD nonn AUTHOR Juri-Stepan Gerasimov, Feb 13 2010 EXTENSIONS Definition corrected, and sequence corrected (1158 inserted) by R. J. Mathar, May 02 2010 More terms from Jinyuan Wang, May 15 2020 STATUS approved

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Last modified September 18 13:54 EDT 2021. Contains 347527 sequences. (Running on oeis4.)