Number of right isosceles triangles that can be formed from the n^2 points of n X n grid of points (or geoboard).

A187452

Number of right isosceles triangles that can be formed from the n^2 points of n X n grid of points (or geoboard).

Terms

    a(0) =0a(1) =4a(2) =28a(3) =96a(4) =244a(5) =516a(6) =968a(7) =1664a(8) =2680a(9) =4100a(10) =6020a(11) =8544a(12) =11788a(13) =15876a(14) =20944a(15) =27136a(16) =34608a(17) =43524a(18) =54060a(19) =66400a(20) =80740a(21) =97284a(22) =116248a(23) =137856a(24) =162344a(25) =189956a(26) =220948a(27) =255584a(28) =294140a(29) =336900

External references