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A104021
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Numbers n which can be represented as k^2*j, 0 < j =< k & (k, j) = 1.
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5
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4, 9, 16, 18, 25, 36, 48, 49, 50, 64, 75, 81, 98, 100, 121, 144, 147, 162, 169, 180, 192, 196, 225, 242, 245, 256, 289, 294, 300, 320, 324, 338, 361, 363, 400, 405, 441, 448, 450, 484, 507, 529, 567, 576, 578, 588, 605, 625, 648, 676, 700, 720, 722, 726, 729
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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MATHEMATICA
| Take[ Union[ Flatten[ Table[ If[ GCD[k, j] == 1, k^2*j, {}], {k, 27}, {j, k - 1}]]], 55]
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CROSSREFS
| Cf. A104020, A102448, A104023, A104026.
Sequence in context: A104020 A066694 A102646 * A073804 A195212 A015871
Adjacent sequences: A104018 A104019 A104020 * A104022 A104023 A104024
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KEYWORD
| nonn
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AUTHOR
| Leroy Quet and Robert G. Wilson v (rgwv(AT)rgwv.com), Feb 24 2005
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