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Search: id:A133604
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| A133604 |
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Elements of A005282 that are also the sum of a pair of not necessarily distinct elements of A005282. |
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+0
2
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| 2, 4, 8, 21, 66, 97, 204, 565, 662, 775, 970, 1821, 2780, 6374, 8730, 8942, 10898, 24596, 55307, 67189, 79047, 84345, 164868, 231694, 233570, 234619, 271511, 298414, 433973, 474668, 475800, 567408, 829129, 839728, 889285, 1394240
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OFFSET
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1,1
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COMMENT
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A005282 is the sequence of smallest numbers such that the pairwise sums of not necessarily distinct elements are all distinct.
Conjecture: 2, 4 and 8 are the only terms n such that n = 2*A005282(k) for some k.
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LINKS
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Klaus Brockhaus, Table of n, a(n) for n = 1..98
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EXAMPLE
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A005282(3) = 4 + 4 = 8 = A005282(4), hence 8 is in the sequence.
A005282(10) = 81, A005282(12) = 123. 81 + 123 = 204 = A005282(15), hence 204 is in the sequence.
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CROSSREFS
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Cf. A005282, A011185, A133605.
Sequence in context: A108071 A055876 A065847 this_sequence A115778 A027713 A155765
Adjacent sequences: A133601 A133602 A133603 this_sequence A133605 A133606 A133607
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KEYWORD
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nonn
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AUTHOR
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Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Sep 18 2007
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