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 A301857 The lesser of j,k, the smallest pair such that A023900(j) + A023900(k) = 0 and j,k are coprime. 1
 1, 13, 37, 41, 61, 73, 89, 97, 109, 113, 185, 157, 181, 193, 233, 241, 277, 281, 323, 313, 337, 349, 353, 403, 397, 401, 409, 421, 433, 449, 457, 461, 527, 551, 521, 541, 577, 593, 601, 613, 617, 641, 661, 673, 701, 779, 733, 757, 761, 769, 959, 821, 829, 899, 877, 881, 929, 937, 953, 997, 1009, 1013, 1021, 1033, 1049 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS a(11) is the first term where neither j or k is prime. A301591 is contained in this sequence. LINKS EXAMPLE 1 is a term since A023900(1) + A023900(2) = 0 and gcd(1,2) = 1. 185 is a term since A023900(185) + A023900(273) = 0 and gcd(185,273) = 1. CROSSREFS Cf. A023900, A301591, A301374. Sequence in context: A281004 A088963 A301591 * A220462 A280997 A185006 Adjacent sequences:  A301854 A301855 A301856 * A301858 A301859 A301860 KEYWORD nonn AUTHOR Torlach Rush, Mar 27 2018 STATUS approved

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Last modified June 22 13:46 EDT 2021. Contains 345380 sequences. (Running on oeis4.)