Fibonacci (SQL Server 2012)

IF OBJECT_ID('TMP_CUSTOMER') IS NOT NULL
 DROP TABLE TMP_CUSTOMER
 
CREATE TABLE TMP_CUSTOMER
(
 CUSTOMER_ID INT IDENTITY PRIMARY KEY,
 CUSTOMER_CODE VARCHAR(10),
 CUSTOMER_VALUE INT
)
 
INSERT INTO TMP_CUSTOMER
SELECT 'CODE1', 1 UNION ALL
SELECT 'CODE1', 2 UNION ALL
SELECT 'CODE1', 3 UNION ALL
SELECT 'CODE2', 4 UNION ALL
SELECT 'CODE2', 5 UNION ALL
SELECT 'CODE2', 6 UNION ALL
SELECT 'CODE3', 7 UNION ALL
SELECT 'CODE3', 8 UNION ALL
SELECT 'CODE4', 9 UNION ALL
SELECT 'CODE4', 10 
 
/* FIBONACCI GENERAL */
SELECT 
 *,
 SUM(CUSTOMER_VALUE) OVER (ORDER BY CUSTOMER_ID)
FROM TMP_CUSTOMER
 
/* FIBONACCI BY CUSTOMER CODE */
SELECT 
 *,
 SUM(CUSTOMER_VALUE) OVER (PARTITION BY CUSTOMER_CODE ORDER BY CUSTOMER_ID)
FROM TMP_CUSTOMER