Triangle of least prime signatures such that T(1,1)= 1; T(r,j) = 2*T(r,j-1) for j>1 and T(r+1,1) is the smallest value in A025487 not appearing on an earlier row.
A085988
Triangle of least prime signatures such that T(1,1)= 1; T(r,j) = 2*T(r,j-1) for j>1 and T(r+1,1) is the smallest value in A025487 not appearing on an earlier row.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =6a(4) =12a(5) =24a(6) =8a(7) =16a(8) =32a(9) =64a(10) =30a(11) =60a(12) =120a(13) =240a(14) =480a(15) =36a(16) =72a(17) =144a(18) =288a(19) =576a(20) =1152a(21) =48a(22) =96a(23) =192a(24) =384a(25) =768a(26) =1536a(27) =3072a(28) =128a(29) =256
External references
- oeis: A085988