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A006168
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Number of factorization patterns of polynomials of degree n over F_3.
(Formerly M2461)
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2
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1, 3, 5, 10, 15, 29, 42, 72, 107, 170, 246, 383, 542, 810, 1145, 1662, 2311, 3305, 4537, 6363, 8677, 11974, 16159, 22068, 29504, 39811, 52887, 70632, 93102, 123362, 161473, 212198, 276185, 360270, 466090, 604267, 777399, 1001656, 1282456
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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REFERENCES
| R. A. Hultquist, G. L. Mullen and H. Niederreiter, Association schemes and derived PBIB designs of prime power order, Ars. Combin., 25 (1988), 65-82.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
| T. D. Noe, Table of n, a(n) for n=1..1000
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FORMULA
| Euler transform of sequence b(n) = sum_{d|n, A027376(d)>=n/d} 1. - Frank Adams-Watters (FrankTAW(AT)Netscape.net), Jun 19 2006
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CROSSREFS
| Cf. A006167-A006171.
Cf. A027376.
Sequence in context: A077285 A072523 A054473 * A037246 A184800 A032279
Adjacent sequences: A006165 A006166 A006167 * A006169 A006170 A006171
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
| More terms from Frank Adams-Watters (FrankTAW(AT)Netscape.net), Jun 19 2006
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