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A058820
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a(0) = 1, a(1) = 5; for n>=2 a(n) is the number of degree-n monic reducible polynomials over GF(5), i.e. a(n) = 5^n - A001692(n).
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0
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1, 5, 15, 85, 475, 2501, 13045, 66965, 341875, 1736125, 8789377, 44389205, 223796925, 1126802885
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| Dimensions of homogeneous subspaces of shuffle algebra over 5-letter alphabet (see A058766 for 2-letter case).
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REFERENCES
| M. Lothaire, Combinatorics on words, Cambridge mathematical library, 1983, p. 126 (definition of shuffle algebra).
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CROSSREFS
| Cf. A058766.
Cf. A001692.
Sequence in context: A030487 A165470 A165625 * A054363 A184438 A134135
Adjacent sequences: A058817 A058818 A058819 * A058821 A058822 A058823
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KEYWORD
| nonn
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AUTHOR
| Claude Lenormand (claude.lenormand(AT)free.fr), Jan 04 2001
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EXTENSIONS
| Better description from Sharon Sela (sharonsela(AT)hotmail.com), Feb 19 2002
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