A pre-loaded example dataset in R

Main page: https://www.rdocumentation.org/packages/datasets/versions/3.6.2/topics/lynx

lynx
## Time Series:
## Start = 1821 
## End = 1934 
## Frequency = 1 
##   [1]  269  321  585  871 1475 2821 3928 5943 4950 2577  523   98  184  279  409
##  [16] 2285 2685 3409 1824  409  151   45   68  213  546 1033 2129 2536  957  361
##  [31]  377  225  360  731 1638 2725 2871 2119  684  299  236  245  552 1623 3311
##  [46] 6721 4254  687  255  473  358  784 1594 1676 2251 1426  756  299  201  229
##  [61]  469  736 2042 2811 4431 2511  389   73   39   49   59  188  377 1292 4031
##  [76] 3495  587  105  153  387  758 1307 3465 6991 6313 3794 1836  345  382  808
##  [91] 1388 2713 3800 3091 2985 3790  674   81   80  108  229  399 1132 2432 3574
## [106] 2935 1537  529  485  662 1000 1590 2657 3396