Triangle T, read by rows, such that column 2k+1 of T equals column k of T^2 and column 2k of T equals column k of T*R: [T^2](n+k,k) = T(n+2k+1,2k+1) and [T*R](n+k,k) = T(n+2k,2k) for n>=0, k>=0, where R = SHIFT_RIGHT(T).
A117418
Triangle T, read by rows, such that column 2k+1 of T equals column k of T^2 and column 2k of T equals column k of T*R: [T^2](n+k,k) = T(n+2k+1,2k+1) and [T*R](n+k,k) = T(n+2k,2k) for n>=0, k>=0, where R = SHIFT_RIGHT(T).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =4a(8) =3a(9) =1a(10) =1a(11) =9a(12) =8a(13) =4a(14) =1a(15) =1a(16) =23a(17) =22a(18) =14a(19) =5a(20) =1a(21) =1a(22) =66a(23) =65a(24) =50a(25) =20a(26) =6a(27) =1a(28) =1a(29) =209
External references
- oeis: A117418