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Numbers equal to the determinant of a circulant matrix based on the base-9 digits of n.
4

%I #12 May 07 2018 07:22:34

%S 1,2,3,4,5,6,7,8,104,126,130,468,2035,8052,8421,12100,18788,21296,

%T 60736,90155,109135,119795,123201,137605,147095,160965,199728,457856,

%U 523809,697334,2958176,3652360,4725030,5331625,6825024,7014400,7694336,9376133,14012352

%N Numbers equal to the determinant of a circulant matrix based on the base-9 digits of n.

%C Base 9 variant of A219327. See A303366 .. A303368 for other bases.

%e 104 is in the sequence because 104 = 125[9] (in base 9) and 104 = det [1,2,5; 5,1,2; 2,5,1].

%o (PARI) (c(v)=abs(matdet(matrix(#v,#v,i,j,v[(j-i)%#v+1]))));for(n=1,oo,n==c(digits(n,9))&&print1(n","))

%Y Cf. A303366 (base 6), A303367 (base 7), A303368 (base 8), A219327 (base 10).

%K nonn,base

%O 1,2

%A _M. F. Hasler_, May 05 2018

%E a(31)-a(39) from _Giovanni Resta_, May 07 2018