A143353 - OEIS

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A143353

Triangle read by rows, A127172 * A128407 = (A051731)^3 * A128407, 1<=k<=n.

1, 3, -1, 3, 0, -1, 6, -3, 0, 0, 3, 0, 0, 0, -1, 9, -3, -3, 0, 0, 1, 3, 0, 0, 0, 0, 0, -1, 10, -6, 0, 0, 0, 0, 0, 0, 6, 0, -3, 0, 0, 0, 0, 0, 0, 9, -3, 0, 0, -3, 0, 0, 0, 0, 1, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 18, -9, -6, 0, 0, 3, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 9, -3, 0, 0, 0, 0, -3, 0, 0, 0, 0, 0, 0, 1

(list; table; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Left border = A007425.

Right border = mu(n), A008683.

Row sums = d(n), A000010: (1, 2, 2, 3, 2, 4, 2,...).

LINKS

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

FORMULA

Triangle read by rows, A127172 * A128407 = (A051731)^3 * A128407, 1<=k<=n

EXAMPLE