Numbers equal to the determinant of a circulant matrix based on the base-7 digits of n.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =27a(7) =81a(8) =133a(9) =143a(10) =144a(11) =152a(12) =190a(13) =209a(14) =250a(15) =1125a(16) =8569a(17) =10934a(18) =16401a(19) =237568a(20) =362306a(21) =391257a(22) =695751a(23) =723260a(24) =5294625a(25) =6056974a(26) =6332291a(27) =6523631a(28) =6669475a(29) =11128547