

A103948


a(n) is the number of distinct nth 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
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OFFSET

0,2


LINKS

Table of n, a(n) for n=0..69.
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^53*x^430*x^339*x^228*x1) / ((x1)*(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



