Hi Chase,

The small workflow below will populate a multi-value token with the next 10 numbers in your sequence, based on a starting value and increment value.    I am not sure how you will be using these values but this might give you a place to start.   The values returned are strings, not actual hex numbers .....

Workflow: 

Token values:
 hex_start is the hex number that your sequence will start at
 inc_value is the value that your sequence will increment ( in hexadecimal )
 sequence is a multi-value token with the sequence


The script (C#) converts the hex_start and inc_Value to hexadecimal,  runs a loop that generates the next 10 values saving them into a list and returns that.

namespace WorkflowActivity.Scripting.Script
{
    using System;
    using System.Collections.Generic;
    using System.ComponentModel;
    using System.Data;
    using System.Data.SqlClient;
    using System.Text;

    /// <summary>
    /// Provides one or more methods that can be run when the workflow scripting activity is performed.
    /// </summary>
    public class Script1 : ScriptClass90
    {
        /// <summary>
        /// This method is run when the activity is performed.
        /// </summary>
        protected override void Execute()
        {
            int hex = Convert.ToInt32((string)this.GetTokenValue("hex_start"),16);
            int inc = Convert.ToInt32((string)this.GetTokenValue("inc_Value"),16);

            List<string> result = new List<string>();
            for(int x= 0; x<10;x++) {
                hex += inc;
                result.Add(hex.ToString("X"));
            }
            SetTokenValue("sequence",result);
        }
    }
}

Results:


Hope that helps.
~ Andrew