Perimeters of more than one primitive 60-degree integer triangle.

Terms

a(0) =1260a(1) =2520a(2) =2574a(3) =3080a(4) =3740a(5) =3780a(6) =3978a(7) =4620a(8) =4940a(9) =5148a(10) =5720a(11) =5814a(12) =5940a(13) =6435a(14) =6930a(15) =7020a(16) =7280a(17) =7560a(18) =7820a(19) =7866a(20) =7956a(21) =8190a(22) =8550a(23) =8580a(24) =8892a(25) =9044a(26) =10010a(27) =10350a(28) =10395a(29) =10472