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 A103948 a(n) is the number of distinct n-th powers of functions {1, 2, 3} -> {1, 2, 3}. 3
 1, 27, 12, 19, 12, 21, 10, 21, 12, 19, 12, 21, 10, 21, 12, 19, 12, 21, 10, 21, 12, 19, 12, 21, 10, 21, 12, 19, 12, 21, 10, 21, 12, 19, 12, 21, 10, 21, 12, 19, 12, 21, 10, 21, 12, 19, 12, 21, 10, 21, 12, 19, 12, 21, 10, 21, 12, 19, 12, 21, 10, 21, 12, 19, 12, 21, 10, 21, 12, 19 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Index entries for linear recurrences with constant coefficients, signature (-1, 0, 1, 1). FORMULA For n > 1, a(n) = a(n+6). G.f.: (6*x^5-3*x^4-30*x^3-39*x^2-28*x-1) / ((x-1)*(x+1)*(x^2+x+1)). - Colin Barker, Aug 07 2013 MATHEMATICA Join[{1, 27}, LinearRecurrence[{-1, 0, 1, 1}, {12, 19, 12, 21}, 68]] (* Ray Chandler, Sep 08 2015 *) CROSSREFS Cf. A102687, A102709, A103947, A103949, A103950. Row n=3 of A247026. Sequence in context: A040706 A069893 A013681 * A323835 A040705 A317106 Adjacent sequences:  A103945 A103946 A103947 * A103949 A103950 A103951 KEYWORD easy,nonn AUTHOR David Wasserman, Feb 21 2005 STATUS approved

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Last modified May 5 23:20 EDT 2021. Contains 343579 sequences. (Running on oeis4.)