Triangle T, read by rows, where matrix power T^3 has powers of 3 in the secondary diagonal: [T^3](n+1,n) = 3^(n+1), with all 1's in the main diagonal and zeros elsewhere.
A117252
Triangle T, read by rows, where matrix power T^3 has powers of 3 in the secondary diagonal: [T^3](n+1,n) = 3^(n+1), with all 1's in the main diagonal and zeros elsewhere.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =-3a(4) =3a(5) =1a(6) =45a(7) =-27a(8) =9a(9) =1a(10) =-2430a(11) =1215a(12) =-243a(13) =27a(14) =1a(15) =433026a(16) =-196830a(17) =32805a(18) =-2187a(19) =81a(20) =1a(21) =-245525742a(22) =105225318a(23) =-15943230a(24) =885735a(25) =-19683a(26) =243a(27) =1a(28) =434685788658a(29) =-178988265918
External references
- oeis: A117252