Sequence of Powers of 4

Integer Sequence
The sequence of powers of $4$ begins:
 * $1, 4, 16, 64, 256, 1024, 4096, 16 \, 384, 65 \, 536, 262 \, 144, 1 \, 048 \, 576, 4 \, 194 \, 304, \ldots$