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Search: id:A006169
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| A006169 |
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Number of factorization patterns of polynomials of degree n over F_4.
(Formerly M2475)
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+0
1
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| 1, 3, 5, 11, 16, 32, 47, 84, 124, 206, 299, 481, 687, 1058, 1506, 2255, 3163, 4638, 6444, 9258, 12757, 18021, 24604, 34307, 46445, 63926, 85948, 117021, 156156, 210617, 279202, 373252, 491801, 652264, 854343, 1125152, 1465587, 1917282, 2484733
(list; graph; listen)
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OFFSET
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1,2
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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.
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LINKS
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T. D. Noe, Table of n, a(n) for n=1..1000
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FORMULA
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Euler transform of sequence b(n) = sum_{d|n, A027377(d)>=n/d} 1. - Frank Adams-Watters (FrankTAW(AT)Netscape.net), Jun 19 2006
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CROSSREFS
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Cf. A006167-A006171.
Cf. A027377.
Sequence in context: A138879 A018313 A074820 this_sequence A088328 A102643 A125631
Adjacent sequences: A006166 A006167 A006168 this_sequence A006170 A006171 A006172
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
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More terms from Frank Adams-Watters (FrankTAW(AT)Netscape.net), Jun 19 2006
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