> n+1 is a New York–based American literary magazine that publishes social criticism, political commentary, essays, art, poetry, book reviews, and short fiction. It is published in print three times annually with regular articles being published online. Each print issue averages around 200 pages in length.

https://en.wikipedia.org/wiki/N%2B1

** unless you are into cycling/guitars/keyboards/hotrods/whatever then "N+1" is the ideal number of bikes/guitars/keyboards/cars/whatever to own where N is the number you currently have.