[R] I think a simple question

[Leeds, Mark (IED)]

I have index ( of a vector ) values of say

tempin<-c(1 31 61   91 121     all the way upto 1411)

What I want is a function that takes in a number say, x = 5, and gives
me an new vector
of

tempout<-1  6 31  36 91  96  121  126  .......... 1411   1416

This can't be so hard but I can't get it and I've honestly tried.
Obviously, tempin + 5 gives me the missing values but I don't know how
to interwine them in the order above. Thanks for any help
you can provide.

                                                               mark
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