[R] How can I replicate Excel's 'growth trend' series interpolation?

[Jorgy Porgee]

Good day all, I'm trying to replicate Excel's growth trend series
interpolation, available by highlighting a number of cells and then
under Edit-->Fill-->Series-->Type=growth and select 'Trend'.
For example, if my starting point is 1.4 and end point is 30 with the
sequence length being 11, the resulting series generated by the above
is as follows:
1.4
1.902073774
2.584203316
3.510960968
4.770076272
6.480740698
8.804890658
11.96253686
16.25259117
22.08116245
30

Any idea how this can be replicated in R would be much appreciated.

Thanks in advance,

George.