The pattern is:
n = n + 1
n = n * 4
repeat
So,
2, 3, 12, 13, 52, 53, 112, 113, 452, 453, ...
62
59 is the next number in this series.
The next number in the series is 67.
A single number such as 61205041320 does not make a series.
A single number, such as 12848384 does not make a series.
One number does not make a sequence (nor a series).
There is no series of number: just one very large number!
8
243
20
73791170
25