Number of squares in the interior of the square with vertices (n,0), (0,n), (-n,0) and (0,-n) in a square (x,y)-grid.
A111746
Number of squares in the interior of the square with vertices (n,0), (0,n), (-n,0) and (0,-n) in a square (x,y)-grid.
Terms
- a(0) =0a(1) =5a(2) =17a(3) =42a(4) =82a(5) =143a(6) =227a(7) =340a(8) =484a(9) =665a(10) =885a(11) =1150a(12) =1462a(13) =1827a(14) =2247a(15) =2728a(16) =3272a(17) =3885a(18) =4569a(19) =5330a(20) =6170a(21) =7095a(22) =8107a(23) =9212a(24) =10412a(25) =11713a(26) =13117a(27) =14630a(28) =16254a(29) =17995
External references
- oeis: A111746