Number of noncongruent integer-sided tetrahedra with largest side n.

Terms

a(0) =1a(1) =4a(2) =16a(3) =45a(4) =116a(5) =254a(6) =516a(7) =956a(8) =1669a(9) =2760a(10) =4379a(11) =6676a(12) =9888a(13) =14219a(14) =19956a(15) =27421a(16) =37062a(17) =49143a(18) =64272a(19) =82888a(20) =105629a(21) =133132a(22) =166090a(23) =205223a(24) =251624a(25) =305861a(26) =369247a(27) =442695a(28) =527417a(29) =624483