Calculator for paging

PageCalculator.cs

using System.Collections.Generic;
using System.Linq;

namespace PageCalculator
{
  public class Page
  {
    public Page(int skip, int take)
    {
      Skip = skip;
      Take = take;
    }

    public int Skip { get; }

    public int Take { get; }
  }
  
  public interface IPageCalculator
  {
    IEnumerable<Page> GetPages(int totalCount, int startIndex, int take);
  }

  public class PageCalculator : IPageCalculator
  {
    public IEnumerable<Page> GetPages(int totalCount, int startIndex, int take)
    {
      List<Page> GetPagesR(int startIndexR, List<Page> acc)
      {
        var newStartIndex = startIndexR + take;

        if (newStartIndex >= totalCount)
        {
          acc.Add(new Page(startIndexR, totalCount - startIndexR));

          return acc;
        }

        acc.Add(new Page(startIndexR, take));

        return GetPagesR(newStartIndex, acc);
      }

      return startIndex >= totalCount ? Enumerable.Empty<Page>() : GetPagesR(startIndex, Enumerable.Empty<Page>().ToList());
    }
  }
}