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A006170
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Number of factorization patterns of polynomials of degree n over F_5.
(Formerly M2478)
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2
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1, 3, 5, 11, 17, 33, 50, 89, 135, 223, 332, 531, 776, 1194, 1730, 2591, 3700, 5429, 7660, 11035, 15417, 21851, 30225, 42300, 57966, 80146, 108956, 149076, 201073, 272587, 365009, 490656, 652700, 870597, 1150875, 1524479, 2003426, 2636589, 3446140
(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, A001692(d)>=n/d} 1. - Frank Adams-Watters (FrankTAW(AT)Netscape.net), Jun 19 2006
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CROSSREFS
| Cf. A006167-A006171.
Cf. A001692.
Sequence in context: A124179 A124173 A091610 * A147071 A006171 A060647
Adjacent sequences: A006167 A006168 A006169 * A006171 A006172 A006173
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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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