Triangular Kaprekar-like numbers: numbers k such that the base-10 representation of T(k) = k*(k+1)/2 is the concatenation of two numbers x and y such that x + y = k.
A110939
Triangular Kaprekar-like numbers: numbers k such that the base-10 representation of T(k) = k*(k+1)/2 is the concatenation of two numbers x and y such that x + y = k.
Terms
- a(0) =9a(1) =10a(2) =18a(3) =19a(4) =45a(5) =55a(6) =99a(7) =100a(8) =144a(9) =154a(10) =198a(11) =199a(12) =297a(13) =703a(14) =999a(15) =1000a(16) =1296a(17) =1702a(18) =1998a(19) =1999a(20) =2223a(21) =2728a(22) =4879a(23) =4950a(24) =5050a(25) =5292a(26) =7272a(27) =7777a(28) =9999a(29) =10000
External references
- oeis: A110939