A096674 Semiperimeter of the first primitive d-arithmetic triangle, where d=A072330(n).
6, 39, 42, 78, 114, 147, 186, 201, 237, 222, 258, 309, 327, 399, 366, 474, 438, 543, 582, 582, 546, 546, 579, 597, 777, 834, 741, 798, 834, 762, 798, 903, 903, 942, 1086, 1014, 1137, 1119, 1101, 1281, 1374, 1209, 1302, 1374, 1266, 1338, 1299, 1302, 1554, 1533
Offset: 1