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 A055132 Moebius function (A008683) applied to each term in the triangle A055096. 2
 -1, 1, -1, -1, 0, 0, 1, -1, 1, -1, -1, 0, 0, 0, -1, 0, -1, 1, 1, 1, 1, 1, 0, -1, 0, -1, 0, -1, 1, 1, 0, -1, 1, 0, -1, 1, -1, 0, -1, 0, 0, 0, -1, 0, -1, 1, 0, -1, -1, 1, -1, -1, 1, 1, 1, 1, 0, 0, 0, 0, 0, -1, 0, 0, 0, 1, -1, -1, 1, 1, 1, 1, 1, -1, 0, -1, -1, -1, -1, 0, 1, 0, 1, 0, 0, 0, -1, 0, -1, 0, 1, 1, -1, 0, -1, 0, 0, 1, 0, 0, 0, 1, 0, 1, -1 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS MAPLE sum2distinct_squares_array := (n) -> (((n-((trinv(n-1)*(trinv(n-1)-1))/2))^2)+((trinv(n-1)+1)^2)); with(numtheory, mobius); a(n) = mobius(sum2distinct_squares_array(n)) CROSSREFS Cf. A055097. Sequence in context: A115944 A166446 A103368 * A285403 A183918 A128408 Adjacent sequences:  A055129 A055130 A055131 * A055133 A055134 A055135 KEYWORD sign,tabl AUTHOR Antti Karttunen, Apr 04 2000 STATUS approved

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Last modified April 6 11:02 EDT 2020. Contains 333273 sequences. (Running on oeis4.)