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 A176451 Number of primes between two consecutive nonprimes in A037143. 0
 2, 1, 1, 0, 2, 0, 2, 0, 1, 0, 2, 0, 0, 1, 0, 2, 1, 0, 1, 0, 0, 2, 0, 1, 2, 0, 1, 1, 0, 0, 1, 0, 0, 0, 3, 2, 1, 0, 0, 0, 0, 0, 1, 1, 0, 2, 0, 0, 0, 0, 2, 1, 0, 0, 1, 1, 1, 0, 2, 0, 0, 2, 2, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 3, 0, 2, 0, 1, 0, 1, 0, 1, 0, 2, 1, 2, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 2, 1, 0, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Two together with number of primes between successive semiprimes. LINKS FORMULA a(n+1)=A088700(n). EXAMPLE a(1)=2 because A037143(1)=1(nonprime) < A037143(2)=2(prime) < A037143(3)=3(prime) < A037143(4)=4(nonprime). CROSSREFS Sequence in context: A122821 A054009 A339210 * A091297 A166712 A035183 Adjacent sequences:  A176448 A176449 A176450 * A176452 A176453 A176454 KEYWORD nonn AUTHOR Juri-Stepan Gerasimov, Apr 18 2010 STATUS approved

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Last modified May 12 10:54 EDT 2021. Contains 343821 sequences. (Running on oeis4.)