A039740 Lattice animals in the cubic diamond lattice (4 nearest neighbors), even-vertex-connected cubes.
1, 4, 12, 44, 182, 796, 3612, 16786, 79426, 381250, 1851832, 9086022, 44970688, 224279188, 1126038472, 5687027204, 28873452032, 147281732692, 754443210294
Offset: 1