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Search: id:A002849
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| A002849 |
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Number of solutions of x+y=z from {1, 2, ..., n}.
(Formerly M0980 N0368)
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+0
1
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| 0, 0, 1, 2, 4, 6, 3, 10, 25, 12, 42, 8, 40, 202, 21
(list; graph; listen)
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OFFSET
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1,4
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REFERENCES
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R. K. Guy, ``Sedl\'{a\v{c}ek's Conjecture on Disjoint Solutions of x+y= z,'' in Proc. Conf. Number Theory. Pullman, WA, 1971, pp. 221-223.
R. K. Guy, ``Packing [ 1,n ] with solutions of ax + by = cz; the unity of combinatorics,'' in Colloq. Internaz. Teorie Combinatorie. Rome, 1973, Atti Conv. Lincei. Vol. 17, Part II, pp. 173-179, 1976.
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CROSSREFS
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Sequence in context: A064413 A122280 A057063 this_sequence A072984 A018841 A138125
Adjacent sequences: A002846 A002847 A002848 this_sequence A002850 A002851 A002852
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KEYWORD
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nonn
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AUTHOR
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njas
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