Triangle read by rows: T(0,0) = 1; T(n,k) = 2 T(n-1,k) - T(n-4,k-1) for 0 <= k <= floor(n/4); T(n,k)=0 for n or k < 0.
A317506
Triangle read by rows: T(0,0) = 1; T(n,k) = 2 T(n-1,k) - T(n-4,k-1) for 0 <= k <= floor(n/4); T(n,k)=0 for n or k < 0.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =8a(4) =16a(5) =-1a(6) =32a(7) =-4a(8) =64a(9) =-12a(10) =128a(11) =-32a(12) =256a(13) =-80a(14) =1a(15) =512a(16) =-192a(17) =6a(18) =1024a(19) =-448a(20) =24a(21) =2048a(22) =-1024a(23) =80a(24) =4096a(25) =-2304a(26) =240a(27) =-1a(28) =8192a(29) =-5120
External references
- oeis: A317506