seq() function 递增步长

Question

I want to generate a vector with the values from 13 to 79. The distance between the elements should be the index of the value itself. So that the output would be 13, 14, 16, 19, 23, 28, 34, 41, 49, 58, 68, 79 Can i accomplish this with the seq() function? Is there a way to increase the by argument with each step?

Answer 1

With accumulate :

Reduce(`+`, 1:11, init = 13, accumulate = TRUE)
#[1] 13 14 16 19 23 28 34 41 49 58 68 79

purrr::accumulate(1:11, .init = 13, `+`)
#[1] 13 14 16 19 23 28 34 41 49 58 68 79