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A003045
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a(n) (n>6) is least integer > a(n-1) with precisely three representations a(n) = a(i) + a(j), 1<=i<j<n.
(Formerly M0491)
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0
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1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 19, 21, 23, 25, 30, 44, 46, 48, 50, 55, 65, 73, 74, 77, 84, 86, 91, 95, 97, 114, 122, 123, 126, 133, 142, 144, 148, 162, 171, 173, 175, 190, 197, 205, 208, 216, 227, 232, 243, 244, 258, 265, 272, 278, 280, 291, 298, 309, 314, 326
(list;
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listen;
history;
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OFFSET
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1,2
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REFERENCES
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R. K. Guy, Unsolved Problems in Number Theory, Section C4.
R. Queneau, Sur les suites s-additives, J. Combin. Theory, A12 (1972), 31-71.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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Table of n, a(n) for n=1..62.
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CROSSREFS
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Sequence in context: A182419 A033060 A060471 * A029750 A173925 A061920
Adjacent sequences: A003042 A003043 A003044 * A003046 A003047 A003048
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane.
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EXTENSIONS
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Definition revised by Duncan Moore (duncan.moore(AT)gmx.com), Feb 20 2010
More terms from Jon E. Schoenfield (jonscho(AT)hiwaay.net), Mar 26 2010
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STATUS
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approved
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