A303261 - OEIS

%I #19 Apr 30 2018 11:42:04

%S 1,28,35,1936,2761,3421,3732,4043,4354,281048,289820,333293,420239,

%T 428752,430686,437554,500380,500888,736600,941578,984377,1027176,

%U 1069975,1112774,1155573,1662216,1776201,2087008,5331625,6825024,7014400

%N Numbers having n digits in base n+1, and equal to the determinant of a circulant matrix based on these digits.

%C A subsequence of A303262, namely, the terms in row n which correspond to n-digit numbers in base n+1.

%o (PARI) for(n=1, 10, for(k=(n+1)^(n-1), (n+1)^n-1, d=Vec(digits(k, n+1)); abs(matdet(matrix(n, n, i, j, d[(j-i)%n+1])))==k&&print1(k", ")))

%Y Cf. A303262, A303260, A219324, A219325, A219326, A219327.

%K nonn,base,more

%O 1,2

%A _M. F. Hasler_, Apr 25 2018