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1, 2, 4, 6, 6, 8, 9, 12, 12, 15, 15, 16, 18, 20, 20, 24, 24, 25, 28, 28, 30, 30, 32, 35, 35, 36, 40, 40, 42, 42, 45, 45, 48, 48, 49, 50, 54, 54, 56, 56, 60, 60, 63, 63, 64, 66, 66, 70, 70, 72, 72, 72, 77, 77, 80, 80, 81, 84, 84, 88, 88, 90, 90, 91, 91
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,2
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COMMENTS
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a(n) is the number associated to the n-th cell of the main diagonal in the diagram of the symmetry of sigma. For more information see A237593 and A237270.
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LINKS
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PROG
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(PARI) See Links section.
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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