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Search: id:A080743
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| A080743 |
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Array read by rows in which n-th row lists orders of elements of Symm(n) that are not orders of elements of Symm(n-1) (6-th row is empty, written as 0 by convention). |
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4
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| 1, 2, 3, 4, 5, 6, 0, 7, 10, 12, 8, 15, 9, 14, 20, 21, 30, 11, 18, 24, 28, 35, 42, 60, 13, 22, 36, 40, 33, 45, 70, 84, 26, 44, 56, 105, 16, 39, 55, 63, 66, 90, 120, 140, 17, 52, 72, 210, 65, 77, 78, 110, 126, 132, 168, 180, 19, 34, 48, 88, 165, 420, 51, 91, 99, 130, 154, 156, 220
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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A051613 gives number of elements in n-th row.
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REFERENCES
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J. Bamberg, G. Cairns and D. Kilminster, The crystallographic restriction, permutations and Goldbach's conjecture, Amer. Math. Monthly, 110 (March 2003), 202-209.
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FORMULA
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n-th row = set of m such that A008475(m) = n, or 0 if no such m exists.
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EXAMPLE
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1; 2; 3; 4; 5,6; 0; 7,10,12; 8,15; ...
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CROSSREFS
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Cf. A008475, A051613, A080744, A051703.
Sequence in context: A010876 A055400 A070553 this_sequence A129835 A004182 A030998
Adjacent sequences: A080740 A080741 A080742 this_sequence A080744 A080745 A080746
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KEYWORD
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nonn,tabf,easy
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Mar 08 2003
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EXTENSIONS
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More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), Mar 12 2003
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