Quiz

[huggles]

Which number logically continues this sequence and why

1 4 8 13 21 30 36 45 54 63 73

Thanks

[gen2]

I have seen this one before. Spell out each number and count the number of letters in it, then add that number on.
eg 1 = ONE = 3 letters so adding on 3 = 4
eg 4 = FOUR = 4 letters so adding on 4 = 8

so 73 = SEVENTYTHREE = 12 letters so adding on 12 = 85