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Search: id:A077669
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| A077669 |
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Triangle read by rows. Let k = n-th composite number. Then n-th row gives n smallest numbers unrelated to k (numbers which do not divide k, are not divisible by k and are not coprime to k). |
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4
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| 6, 4, 8, 6, 10, 12, 6, 12, 15, 21, 4, 6, 8, 12, 14, 8, 9, 10, 14, 15, 16, 4, 6, 8, 10, 12, 16, 18, 6, 9, 10, 12, 18, 20, 21, 24, 6, 10, 12, 14, 18, 20, 22, 24, 26, 4, 8, 10, 12, 14, 15, 16, 20, 21, 22, 6, 8, 12, 14, 15, 16, 18, 22, 24, 25, 26, 6, 9, 12, 14, 15, 18, 24, 27, 28, 30
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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Primes do not have unrelated numbers.
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EXAMPLE
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6; 4,8; 6,10,12; 6,12,15,21; 4,6,8,12,14; ...
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CROSSREFS
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Cf. A077667, A077668, A077670.
Sequence in context: A073746 A010496 A035415 this_sequence A019774 A096499 A021158
Adjacent sequences: A077666 A077667 A077668 this_sequence A077670 A077671 A077672
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KEYWORD
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nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 15 2002
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EXTENSIONS
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More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Jan 27 2003
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