Triangle T, read by rows, where T(n,k) = [T^(3^k)](n-k,0) * (3^k)^(n-k) for n>=k>=0 such that row n of the 3^(n-1)-th root of T consists solely of integers given by: [T^( 1/3^(n-1) )](n,k) = (3^k)^(n-k) for n>=0.
A274480
Triangle T, read by rows, where T(n,k) = [T^(3^k)](n-k,0) * (3^k)^(n-k) for n>=k>=0 such that row n of the 3^(n-1)-th root of T consists solely of integers given by: [T^( 1/3^(n-1) )](n,k) = (3^k)^(n-k) for n>=0.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =6a(4) =9a(5) =1a(6) =201a(7) =405a(8) =81a(9) =1a(10) =43668a(11) =108135a(12) =30618a(13) =729a(14) =1a(15) =66109077a(16) =192068901a(17) =69343209a(18) =2421009a(19) =6561a(20) =1a(21) =734489285949a(24) =48233053719a(25) =194507406a(26) =59049a(27) =1a(33) =15712053165a(34) =531441a(35) =1a(43) =4782969
External references
- oeis: A274480