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Search: id:A027583
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| A027583 |
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Sequence satisfies T(a)=a, where T is defined below. |
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+0
1
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| 1, 1, 1, 2, 2, 3, 3, 4, 5, 6, 7, 9, 10, 11, 13, 16, 18
(list; graph; listen)
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OFFSET
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0,4
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REFERENCES
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S. Viswanath (student, Dept. Math, Indian Inst. Technology, Kanpur) A Note on Partition Eigensequences, preprint, Nov 15 1996.
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LINKS
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M. Bernstein and N. J. A. Sloane, Some canonical sequences of integers, Linear Alg. Applications, 226-228 (1995), 57-72; erratum 320 (2000), 210.
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FORMULA
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Define T:a->b by: given a1<=a2<=..., remove duplicates, keep only numbers = +-1 mod 5, getting c1<c2<...; define b1, b2, ... by 1+Sum bi*x^i = Product 1/(1-x^ci).
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CROSSREFS
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Adjacent sequences: A027580 A027581 A027582 this_sequence A027584 A027585 A027586
Sequence in context: A145933 A120171 A145816 this_sequence A029022 A140953 A112021
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KEYWORD
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nonn,more,eigen
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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