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 A162174 Primes classified by level. 17
 5, 13, 19, 23, 31, 37, 43, 47, 53, 61, 73, 97, 113, 127, 131, 139, 151, 157, 163, 173, 181, 199, 211, 223, 233, 257, 263, 271, 293, 307, 313, 317, 337, 353, 373, 389, 397, 401, 421, 457, 479, 509, 523, 541, 547, 563, 571, 593, 607, 619, 647, 653, 661, 673, 691 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Conjecture : primes classified by level are rarefying among prime numbers. A000040(n) = 2, 3, 7, A162175(n), a(n) [From Rémi Eismann, Jun 27 2009] LINKS R. Eismann, Table of n, a(n) for n=1,..,10000 FORMULA If for prime(n), A117078(n) (the weight) > A117563(n) (the level) then prime(n) is classified by level. If for prime(n), A117078(n) (the weight) <= A117563(n) (the level) and A117078(n) <> 0 then prime(n) is classified by weight. [From Rémi Eismann, Jun 27 2009] EXAMPLE For prime(3)=5, A117078(3)=3 > A117563(3)=1 ; prime(3)=5 is classified by level. For prime(172)=1021, A117078(172)=337 > A117563(172)=3 ; prime(172)=1021 is classified by level. CROSSREFS Cf. A117078, A117563, A000040. Cf. A162175. [From Rémi Eismann, Jun 27 2009] Sequence in context: A067463 A209663 A156111 * A171603 A118915 A084442 Adjacent sequences:  A162171 A162172 A162173 * A162175 A162176 A162177 KEYWORD nonn AUTHOR Rémi Eismann, Jun 27 2009 STATUS approved

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Last modified October 20 04:37 EDT 2019. Contains 328247 sequences. (Running on oeis4.)