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Search: id:A087504
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| A087504 |
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Composition length of the n-th symmetric power of the natural representation of a finite subgroup of SL(2,C) of type E_7 (binary octahedral group). |
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+0
2
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| 1, 1, 1, 1, 2, 2, 3, 3, 4, 3, 4, 4, 6, 5, 6, 5, 7, 6, 8, 7, 9, 7, 9, 8, 11, 9, 11, 9, 12, 10, 13
(list; graph; listen)
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OFFSET
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0,5
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REFERENCES
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Y. Ito, I. Nakamura, Hilbert schemes and simple singularities, New trends in algebraic geometry (Warwick, 1996), 151-233, Cambridge University Press, 1999.
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FORMULA
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G.f.: (1-x^9)/((1-x)(1-x^4)(1-x^6))
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CROSSREFS
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Cf. A008647.
Adjacent sequences: A087501 A087502 A087503 this_sequence A087505 A087506 A087507
Sequence in context: A056239 A100197 A057022 this_sequence A067539 A138099 A110266
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KEYWORD
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easy,nonn
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AUTHOR
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Paul Boddington (psb(AT)maths.warwick.ac.uk), Oct 23 2003
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