Sum of determinants of 3rd-order principal minors of powers of inverse of tetramatrix ((1,1,0,0),(1,0,1,0),(1,0,0,1),(1,0,0,0)).

A074081

Sum of determinants of 3rd-order principal minors of powers of inverse of tetramatrix ((1,1,0,0),(1,0,1,0),(1,0,0,1),(1,0,0,0)).

Terms

    a(0) =4a(1) =-1a(2) =3a(3) =-7a(4) =15a(5) =-26a(6) =51a(7) =-99a(8) =191a(9) =-367a(10) =708a(11) =-1365a(12) =2631a(13) =-5071a(14) =9775a(15) =-18842a(16) =36319a(17) =-70007a(18) =134943a(19) =-260111a(20) =501380a(21) =-966441a(22) =1862875a(23) =-3590807a(24) =6921503a(25) =-13341626a(26) =25716811a(27) =-49570747a(28) =95550687a(29) =-184179871

External references