040608
K
A single number, such as 2481020, cannot define a sequence.
L
h o n
223455423122343
After a trio in a sequence comes a quartet.
Quartet comes after trio in the sequence.
A
A single number, such as 21357, does not define a sequence.
it is y2c
A
Check out the link for the sequence.
It is: Y
Ringo
p
D20G
K