Pageviews Per User (LTV) is a Metric in Google Analytics under the Lifetime Value and Cohorts section
Pageviews Per User (LTV) Definition: Pageviews per user for the acquisition dimension for a cohort.
How its calculated: ga:pageviews / ga:cohortTotalUsersWithLifetimeCriteria
Data Analytics & Insights Google Analytics Metrics Pageviews Per User (LTV)