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Search: id:A085884
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| A085884 |
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Let r and s be such that r + s = n; a(n) = maximum value of sigma(r) + sigma(s). |
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+0
2
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| 2, 4, 6, 8, 10, 13, 15, 16, 19, 19, 24, 29, 31, 32, 35, 34, 40, 40, 43, 43, 46, 46, 56, 61, 63, 64, 67, 66, 72, 73, 75, 76, 79, 78, 88, 92, 94, 95, 98, 97, 103, 99, 106, 104, 109, 103, 120, 125, 127, 128, 131, 130, 136, 132, 139, 137, 142, 136, 152, 169, 171, 172, 175
(list; graph; listen)
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OFFSET
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2,1
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EXAMPLE
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a(8) = 6, the partitions are ( 1,7),(2,6),(3,5),(4,4) which give 9, 15,10,14 as the sum of the sigma function of both the parts.
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CROSSREFS
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Cf. A085883.
Sequence in context: A101814 A034090 A113242 this_sequence A094390 A053044 A129011
Adjacent sequences: A085881 A085882 A085883 this_sequence A085885 A085886 A085887
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KEYWORD
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nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jul 08 2003
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EXTENSIONS
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More terms from David Wasserman (wasserma(AT)spawar.navy.mil), Feb 10 2005
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