Powerful numbers in (1 ℓ + q ℓ )(2 ℓ + q ℓ )⋯( n ℓ + q ℓ )
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1988 ◽
Vol 50
(182)
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pp. 619-619
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1981 ◽
Vol 88
(4)
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pp. 272-274
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2012 ◽
Vol 132
(11)
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pp. 2630-2635
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1988 ◽
Vol 29
(3)
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pp. 251-263
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1998 ◽
Vol 67
(221)
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pp. 439-440
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