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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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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; 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, A027377(d)>=n/d} 1. - Frank Adams-Watters (FrankTAW(AT)Netscape.net), Jun 19 2006
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CROSSREFS
| Cf. A006167-A006171.
Cf. A027377.
Sequence in context: A138879 A018313 A074820 * A088328 A102643 A125631
Adjacent sequences: A006166 A006167 A006168 * A006170 A006171 A006172
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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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