Number of pairs (x, y) with 0 <= x, y <= n such that the distance between two points is a positive integer.
A228108
Number of pairs (x, y) with 0 <= x, y <= n such that the distance between two points is a positive integer.
Terms
- a(0) =4a(1) =18a(2) =48a(3) =108a(4) =204a(5) =342a(6) =528a(7) =780a(8) =1100a(9) =1494a(10) =1968a(11) =2576a(12) =3292a(13) =4122a(14) =5104a(15) =6240a(16) =7524a(17) =8962a(18) =10560a(19) =12348a(20) =14324a(21) =16494a(22) =18864a(23) =21600a(24) =24572a(25) =27786a(26) =31248a(27) =34996a(28) =39012a(29) =43362
External references
- oeis: A228108