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A067801
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Numbers m such that bigomega(m)=2*omega(m).
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18
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1, 4, 9, 24, 25, 36, 40, 49, 54, 56, 88, 100, 104, 121, 135, 136, 152, 169, 184, 189, 196, 225, 232, 240, 248, 250, 289, 296, 297, 328, 336, 344, 351, 360, 361, 375, 376, 424, 441, 459, 472, 484, 488, 504, 513, 528, 529, 536, 540, 560, 568, 584, 600, 621, 624
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OFFSET
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1,2
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COMMENTS
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A square k is a term iff k belongs to A062503; in this case, k = p_1^2 * p_2^2 *...* p_r^2 and bigomega(k) = 2*omega(k) = 2*r. - Bernard Schott, Apr 25 2020
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LINKS
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FORMULA
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MATHEMATICA
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PROG
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CROSSREFS
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Cf. also A065127 (subsequence of nonsquares), A062503 (subsequence of squares).
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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