A055132 - OEIS

A055132

Moebius function (A008683) applied to each term in the triangle A055096.

-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

Table of n, a(n) for n=1..105.

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