Search: id:A060893
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%I A060893
%S A060893 1,1,241,6481,65281,390001,1678321,5762401,16773121,43040161,99990001,
%T A060893 214344241,429960961,815702161,1475750641,2562840001,4294901761,
%U A060893 6975673921,11019855601,16983432721,25599840001,37822664881,54875639281
%N A060893 n^8 - n^4 + 1.
%C A060893 Let Phi_k(x) be the k-th cyclotomic polynomial and form the sequence 
               Phi_k(0), Phi_k(1), Phi_k(2), ... This gives A000027 (k=2), A002061 
               (k=3), A002522 (k=4), A053699 (k=5), A002061 (k=6), A053716 (k=7), 
               A002523 (k=8), A060883 (k=9), A060884 (k=10), A060885 (k=11), A060886 
               (k=12), A060887 (k=13), A060888 (k=14), A060889 (k=15), A060890 (k=16), 
               A060891 (k=18), A060892 (k=20), A060893 (k=24), A060894 (k=30), A060895 
               (k=32), A060896 (k=36).
%H A060893 Harry J. Smith, <a href="b060893.txt">Table of n, a(n) for n=0,...,1000</
               a>
%H A060893 Hisanori Mishima, <a href="http://www.asahi-net.or.jp/~KC2H-MSM/mathland/
               matha1/matha103.htm">Factorizations of many number sequences</a>
%o A060893 (PARI) { for (n=0, 1000, write("b060893.txt", n, " ", n^8 - n^4 + 1); 
               ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jul 14 2009]
%Y A060893 Sequence in context: A046948 A165383 A006687 this_sequence A165375 A007205 
               A008349
%Y A060893 Adjacent sequences: A060890 A060891 A060892 this_sequence A060894 A060895 
               A060896
%K A060893 nonn
%O A060893 0,3
%A A060893 N. J. A. Sloane (njas(AT)research.att.com), May 05 2001

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