A030491 Position of n-th 4 in A030298.
27, 30, 35, 38, 41, 45, 51, 54, 59, 62, 65, 69, 75, 78, 83, 86, 89, 93, 96, 100, 104, 108, 112, 116, 123, 129, 132, 137, 144, 148, 153, 159, 162, 167, 174, 178, 181, 186, 191, 196, 201, 206, 214, 218, 224, 228, 232, 237, 243, 249
Offset: 1