A356413 - OEIS

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A356413

Numbers with an equal sum of the even and odd exponents in their prime factorizations.

1, 60, 84, 90, 126, 132, 140, 150, 156, 198, 204, 220, 228, 234, 260, 276, 294, 306, 308, 315, 340, 342, 348, 350, 364, 372, 380, 414, 444, 460, 476, 490, 492, 495, 516, 522, 525, 532, 550, 558, 564, 572, 580, 585, 620, 636, 644, 650, 666, 693, 708, 726, 732, 735

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OFFSET

1,2

COMMENTS

Numbers k such that A350386(k) = A350387(k).

A085987 is a subsequence. Terms that are not in A085987 are 1, 2160, 3024, ...

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000

EXAMPLE

60 is a term since A350386(60) = A350387(60) = 2.

MATHEMATICA

f[p_, e_] := (-1)^e*e; q[1] = True; q[n_] := Plus @@ f @@@ FactorInteger[n] == 0; Select[Range[1000], q]