** Whole the work is done manually on excel sheets**.

Below are **bimagic squares** written in blocks multiples of orders 11. These are of orders 121 and 1331. The work is done manually by author in 2011. It is summarized in the following link. **Inder J. Taneja**, Bimagic Squares of Bimagic Squares and an Open Problem, Febuarary 11, 2011, 2011, pp. 1-14, (22.02.2011), https://doi.org/10.48550/arXiv.1102.3052.

Before proceeding further below are the basic formulas to check the sums of **magic** and **bimagic** squares

**Magic Sum**

**Bimagic Sum**

where ** n** is the order the magic square.

### Bimagic Square of Order 121

In this case, we have

**S _{121×121}:=885841; Sb_{121×121}:= 8646694001**,

Blocks of order 11 are pandiagonal and of equal sums, **S _{11×11} :=80531**. The magic squares of order 121 are also

**pandiagonal**. See below the excel sheet for the order 121.

#### Excel sheet of Bimagic Square of Order 121

### Bimagic Square of Order 1331: Blocks of Orders 11 and 121

**Bimagic square** of order 1331 with magic and bimagic sums:

**S _{1331×1331}:=1178974511 and Sb_{1331×1331}:= 1392417235445951**

Block of order 121 are also **pandiagonal bimagic** square with different bimagic, but equal magic sums, **S _{121×121}:=107179501.** Block of order 11 are also pandiagonal with equal sums

**S**

_{11×11}:=9743591.The magic square of order 1331 is also **pandiagonal**. It is checked with software by H. White. See below excel sheet of the bimagic square of order 1331.

#### Excel sheet of Bimagic Square of Order 1331

Due to higher values in the excel the the bimagic sum is appearing as **Sb_{1331×1331}:= 1392417235445950. **Actually it is

**.**

**Sb****:= 1392417235445951**_{1331×1331}