Number of kites on an n X n grid (or geoboard).

Terms

a(0) =0a(1) =1a(2) =10a(3) =58a(4) =222a(5) =631a(6) =1584a(7) =3340a(8) =6504a(9) =11697a(10) =19978a(11) =31922a(12) =49822a(13) =74167a(14) =107672a(15) =152484a(16) =211944a(17) =286725a(18) =383578a(19) =502262a(20) =651526a(21) =833979a(22) =1056104a(23) =1318104a(24) =1637336a(25) =2011577a(26) =2452634a(27) =2965902a(28) =3568086a(29) =4253755