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A027583
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Sequence satisfies T(a)=a, where T is defined below.
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0
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1, 1, 1, 2, 2, 3, 3, 4, 5, 6, 7, 9, 10, 11, 13, 16, 18
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,4
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REFERENCES
| S. Viswanath (student, Dept. Math, Indian Inst. Technology, Kanpur) A Note on Partition Eigensequences, preprint, Nov 15 1996.
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LINKS
| 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
| 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
| Sequence in context: A145933 A120171 A145816 * A029022 A140953 A112021
Adjacent sequences: A027580 A027581 A027582 * A027584 A027585 A027586
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KEYWORD
| nonn,more,eigen
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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