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Search: id:A058812
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| A058812 |
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Irregular triangle of inverse totient values of integers generated recursively. Initial value is 1. The inverse-phi sets in increasing order are as follows: {1} -> {2} -> {3, 4, 6} -> {5, 7, 8, 9, 10, 12, 14, 18} -> ... The terms of each row are arranged by magnitude. The next row starts when the increase of terms is violated. 2^n is included in the n-th row. |
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+0
6
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| 1, 2, 3, 4, 6, 5, 7, 8, 9, 10, 12, 14, 18, 11, 13, 15, 16, 19, 20, 21, 22, 24, 26, 27, 28, 30, 36, 38, 42, 54, 17, 23, 25, 29, 31, 32, 33, 34, 35, 37, 39, 40, 43, 44, 45, 46, 48, 49, 50, 52, 56, 57, 58, 60, 62, 63, 66, 70, 72, 74, 76, 78, 81, 84, 86, 90, 98, 108, 114, 126
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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Non-totient values (A007617) are also present as inverses of some previous value.
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LINKS
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T. D. Noe, Rows n=0..9 of triangle, flattened
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CROSSREFS
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A000010, A007617, A005277.
A058811 gives the number of terms in each row.
Cf. A003434, A007575, A060611, A092878, A098196, A135832
Adjacent sequences: A058809 A058810 A058811 this_sequence A058813 A058814 A058815
Sequence in context: A129607 A130340 A130339 this_sequence A072796 A130374 A122363
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KEYWORD
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nonn,tabf,nice
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AUTHOR
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Labos E. (labos(AT)ana.sote.hu), Jan 03 2001
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EXTENSIONS
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Definition revised by T. D. Noe, Nov 30 2007
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