1,6

Table of n, a(n) for n=1..63.

Index entries for sequences related to partitions

a(n) = Sum_{i=1..floor(n/2)} i * (1 - mu(n-i)^2), where mu is the Möbius function (A008683).

Table[Sum[k (1 - MoebiusMu[n - k]^2), {k, Floor[n/2]}], {n, 80}]

Cf. A008683, A008966, A294237.

Sequence in context: A138223 A194742 A159798 * A280694 A270313 A343251

Adjacent sequences: A294233 A294234 A294235 * A294237 A294238 A294239

nonn,easy

Wesley Ivan Hurt, Oct 25 2017

approved