Number of reduced, normalized 3 X 3 semimagic squares with distinct nonnegative integer entries and maximum entry n.

A173724

Number of reduced, normalized 3 X 3 semimagic squares with distinct nonnegative integer entries and maximum entry n.

Terms

    a(0) =1a(1) =2a(2) =6a(3) =14a(4) =21a(5) =36a(6) =51a(7) =74a(8) =93a(9) =134a(10) =163a(11) =216a(12) =248a(13) =330a(14) =371a(15) =470a(16) =526a(17) =646a(18) =714a(19) =872a(20) =942a(21) =1130a(22) =1224a(23) =1440a(24) =1543a(25) =1810a(26) =1922a(27) =2220a(28) =2363a(29) =2700

External references