Triangle P, read by rows, that satisfies [P^4](n,k) = P(n+1,k+1) for n>=k>=0, also [P^(4*m)](n,k) = [P^m](n+1,k+1) for all m, where [P^m](n,k) denotes the element at row n, column k, of the matrix power m of P, with P(k,k)=1 and P(k+1,1)=P(k+1,0) for k>=0.
A111845
Triangle P, read by rows, that satisfies [P^4](n,k) = P(n+1,k+1) for n>=k>=0, also [P^(4*m)](n,k) = [P^m](n+1,k+1) for all m, where [P^m](n,k) denotes the element at row n, column k, of the matrix power m of P, with P(k,k)=1 and P(k+1,1)=P(k+1,0) for k>=0.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =4a(4) =4a(5) =1a(6) =40a(7) =40a(8) =16a(9) =1a(10) =1040a(11) =1040a(12) =544a(13) =64a(14) =1a(15) =78240a(16) =78240a(17) =48960a(18) =8320a(19) =256a(20) =1a(21) =18504256a(22) =18504256a(23) =13110400a(24) =2878720a(25) =131584a(26) =1024a(27) =1a(28) =14463224448a(29) =14463224448
External references
- oeis: A111845