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Search: id:A038996
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| A038996 |
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Sublattices of index n in generic 9-dimensional lattice. |
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+0
3
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| 1, 511, 9841, 174251, 488281, 5028751, 6725601, 50955971, 72636421, 249511591, 235794769, 1714804091, 883708281, 3436782111, 4805173321, 13910980083, 7411742281, 37117211131, 17927094321, 85083452531
(list; graph; listen)
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OFFSET
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0,2
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REFERENCES
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M. Baake, "Solution of coincidence problem...", in R. V. Moody, ed., Math. of Long-Range Aperiodic Order, Kluwer 1997, pp. 9-44.
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LINKS
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Index entries for sequences related to sublattices
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FORMULA
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f(Q, n)=Sum d*f(Q-1, d), d|n; here Q=9.
Multiplicative with a(p^e) = product (p^(e+k)-1)/(p^k-1), k=1..8
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CROSSREFS
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Cf. A001001.
Sequence in context: A160361 A075948 A011559 this_sequence A068025 A075943 A075944
Adjacent sequences: A038993 A038994 A038995 this_sequence A038997 A038998 A038999
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KEYWORD
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nonn,mult
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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