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A294244
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Sum of the smaller parts of the partitions of 2n into two parts with larger part nonsquarefree.
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1
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0, 0, 2, 4, 3, 7, 13, 19, 17, 14, 22, 30, 27, 38, 52, 66, 64, 78, 74, 88, 82, 96, 113, 131, 126, 121, 143, 138, 132, 154, 178, 203, 197, 223, 251, 279, 271, 300, 332, 364, 357, 391, 427, 463, 455, 446, 484, 522, 512, 502, 492, 532, 520, 560, 546, 586, 570
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OFFSET
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1,3
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LINKS
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FORMULA
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a(n) = Sum_{i=1..n} i * (1 - mu(2*n-i)^2), where mu is the Möbius function (A008683).
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MATHEMATICA
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Table[Sum[k (1 - MoebiusMu[2 n - k]^2), {k, n}], {n, 80}]
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PROG
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(PARI) a(n) = sum(i=1, n, i*(1 - moebius(2*n-i)^2)); \\ Michel Marcus, Feb 11 2018
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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