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 A280799 a(n) = A049502(phi(n)). 4
 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 2, 3, 0, 3, 0, 2, 0, 0, 0, 0, 0, 3, 0, 0, 0, 3, 2, 0, 0, 4, 0, 6, 3, 0, 3, 4, 0, 6, 3, 0, 0, 3, 2, 4, 0, 3, 0, 2, 0, 0, 0, 3, 0, 0, 3, 2, 0, 4, 0, 3, 0, 4, 3, 4, 3, 0, 0, 4, 0, 3, 4, 7, 0, 0, 6, 0, 4, 5, 0, 4, 4, 0, 4, 4, 0, 0, 6, 0, 4, 3, 0, 3, 0, 0, 3, 6, 3, 4 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,11 COMMENTS a(n) = Major index (2nd definition) of the total numbers <=n and prime to n i.e., phi(n). LINKS Indranil Ghosh, Table of n, a(n) for n = 1..10000 Indranil Ghosh, Python Program to generate the sequence FORMULA a(n) = A049502(A000010(n)). EXAMPLE For n = 11, phi(n) = 10 and major index (2nd definition) of 10 = 2. So a(n) = 2. CROSSREFS Cf. A000010, A049502, A279519, A280062, A280726. Sequence in context: A091398 A062103 A112314 * A104261 A028702 A083929 Adjacent sequences:  A280796 A280797 A280798 * A280800 A280801 A280802 KEYWORD nonn AUTHOR Indranil Ghosh, Jan 08 2017 STATUS approved

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Last modified April 20 20:26 EDT 2021. Contains 343137 sequences. (Running on oeis4.)