A303369 Numbers equal to the determinant of a circulant matrix based on the base-9 digits of n.

1, 2, 3, 4, 5, 6, 7, 8, 104, 126, 130, 468, 2035, 8052, 8421, 12100, 18788, 21296, 60736, 90155, 109135, 119795, 123201, 137605, 147095, 160965, 199728, 457856, 523809, 697334, 2958176, 3652360, 4725030, 5331625, 6825024, 7014400, 7694336, 9376133, 14012352

Offset: 1

Author

M. F. Hasler, May 05 2018

Keywords

• nonn
• base

Comments

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

Examples

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

Crossrefs

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

Programs

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","))

Extensions

a(31)-a(39) from Giovanni Resta, May 07 2018