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 A282407 Semiprimes p such that next semiprime after p is p + 40. 2
 741841, 1633213, 1889467, 1946677, 2210557, 2440203, 2655427, 2660857, 2729091, 2749273, 2774911, 3077323, 3724909, 3977473, 4021507, 4030891, 4323301, 4372337, 4408581, 4421713, 4608574, 4640419, 4836223, 5640861, 5691531, 6148599, 6166101, 6429853, 6786523 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Note that a(1) = 741841 = A131109(40). Smallest difference between two consecutive terms occurs first at a(22060) = 1141901643 because a(22061) = 1141901683 = 1141901643 + 40. LINKS Zak Seidov, Table of n, a(n) for n = 1..23671 PROG (PARI) is(p) = if(bigomega(p)==2 && bigomega(p+40)==2, for(i=p+1, p+39, if(bigomega(i)==2, return(0))); 1); \\ Jinyuan Wang, May 23 2021 CROSSREFS Cf. A001358, A131109, A217030, A217335, A217357. Sequence in context: A249317 A251487 A227905 * A147707 A133183 A119403 Adjacent sequences: A282404 A282405 A282406 * A282408 A282409 A282410 KEYWORD nonn AUTHOR Zak Seidov, Feb 14 2017 STATUS approved

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Last modified February 26 17:57 EST 2024. Contains 370352 sequences. (Running on oeis4.)