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Search: id:A007621
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| A007621 |
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Impractical numbers: even abundant numbers (A005101) that are not practical(2) (A007620).
(Formerly M5337)
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+0
2
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| 70, 102, 114, 138, 174, 186, 222, 246, 258, 282, 318, 350, 354, 366, 372, 402, 426, 438, 444, 474, 490, 492, 498, 516, 534, 550, 564, 572, 582, 606, 618, 636, 642, 650, 654, 678, 708, 732, 738, 748, 762, 770, 774, 786, 804, 822, 834, 836, 846, 852, 876, 894, 906, 910, 940, 942, 948
(list; graph; listen)
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OFFSET
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1,1
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
R. Honsberger, Mathematical Gems, M.A.A., 1973, p. 113.
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CROSSREFS
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A005101 with A007620 removed. Cf. A035480.
Sequence in context: A165632 A136117 A156718 this_sequence A051971 A075004 A043222
Adjacent sequences: A007618 A007619 A007620 this_sequence A007622 A007623 A007624
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Mira Bernstein, Robert G. Wilson v (rgwv(AT)rgwv.com)
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EXTENSIONS
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More terms from David W. Wilson (davidwwilson(AT)comcast.net).
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