[R] Detect numerical series

[syrvn]

Hello,

I am struggling with detecting successive digits in a numerical series
vector.

Here is an example:

vec <- c(1, 15, 26, 29, 30, 31, 37, 40, 41)

I want to be able to detect 29, 30, 31 and 40, 41.

Then, I would like to delete the successive digits from the vector.

1, 15, 26, 29, 37, 40


Cheers

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