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Search: id:A060470
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| A060470 |
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Smallest positive a(n) such that number of solutions to a(n)=a(j)+a(k) j<k<n is two or less. |
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5
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| 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 19, 24, 26, 28, 33, 35, 37, 42, 44, 46, 51, 53, 55, 60, 62, 64, 69, 71, 73, 78, 80, 82, 87, 89, 91, 96, 98, 100, 105, 107, 109, 114, 116, 118, 123, 125, 127, 132, 134, 136, 141, 143, 145, 150, 152, 154, 159, 161, 163, 168, 170
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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Numbers {1,6,8} mod 9 plus {2,3,4,5,12}.
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EXAMPLE
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12 is in the sequence since it is 4+8 and 2+10 but no other sum of two distinct terms.
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CROSSREFS
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Cf. A003044, A033627, A060469, A060470, A060471, A060472. Virtually identical to A003663.
Sequence in context: A018478 A018350 A033058 this_sequence A003044 A018541 A018293
Adjacent sequences: A060467 A060468 A060469 this_sequence A060471 A060472 A060473
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KEYWORD
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nonn
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AUTHOR
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Henry Bottomley (se16(AT)btinternet.com), Mar 15 2001
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