A166453 - OEIS

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A166453 as a triangular array

										1
									2		1
								2		0		1
							4		2		2		1
						2		0		0		0		1
					4		2		0		0		2		1
				4		0		2		0		2		0		1
			8		4		4		2		4		2		2		1
		2		0		0		0		0		0		0		0		1
	4		2		0		0		0		0		0		0		2		1
4		0		2		0		0		0		0		0		2		0		1

A166453 as a square array

1	2	2	4	2	4	4	8	2	4	4
1	0	2	0	2	0	4	0	2	0
1	2	0	0	2	4	0	0	2
1	0	0	0	2	0	0	0
1	2	2	4	0	0	0
1	0	2	0	0	0
1	2	0	0	0
1	0	0	0
1	2	2
1	0
1

A166453 as an upper right triangle

1	2	2	4	2	4	4	8	2	4	4
	1	0	2	0	2	0	4	0	2	0
		1	2	0	0	2	4	0	0	2
			1	0	0	0	2	0	0	0
				1	2	2	4	0	0	0
					1	0	2	0	0	0
						1	2	0	0	0
							1	0	0	0
								1	2	2
									1	0
										1

										1
									2		1
								2		0		1
							4		2		2		1
						2		0		0		0		1
					4		2		0		0		2		1
				4		0		2		0		2		0		1
			8		4		4		2		4		2		2		1
		2		0		0		0		0		0		0		0		1
	4		2		0		0		0		0		0		0		2		1
4		0		2		0		0		0		0		0		2		0		1

1	2	2	4	2	4	4	8	2	4	4
1	0	2	0	2	0	4	0	2	0
1	2	0	0	2	4	0	0	2
1	0	0	0	2	0	0	0
1	2	2	4	0	0	0
1	0	2	0	0	0
1	2	0	0	0
1	0	0	0
1	2	2
1	0
1

1	2	2	4	2	4	4	8	2	4	4
	1	0	2	0	2	0	4	0	2	0
		1	2	0	0	2	4	0	0	2
			1	0	0	0	2	0	0	0
				1	2	2	4	0	0	0
					1	0	2	0	0	0
						1	2	0	0	0
							1	0	0	0
								1	2	2
									1	0
										1

										1
									2		1
								2		0		1
							4		2		2		1
						2		0		0		0		1
					4		2		0		0		2		1
				4		0		2		0		2		0		1
			8		4		4		2		4		2		2		1
		2		0		0		0		0		0		0		0		1
	4		2		0		0		0		0		0		0		2		1
4		0		2		0		0		0		0		0		2		0		1

1	2	2	4	2	4	4	8	2	4	4
1	0	2	0	2	0	4	0	2	0
1	2	0	0	2	4	0	0	2
1	0	0	0	2	0	0	0
1	2	2	4	0	0	0
1	0	2	0	0	0
1	2	0	0	0
1	0	0	0
1	2	2
1	0
1

1	2	2	4	2	4	4	8	2	4	4
	1	0	2	0	2	0	4	0	2	0
		1	2	0	0	2	4	0	0	2
			1	0	0	0	2	0	0	0
				1	2	2	4	0	0	0
					1	0	2	0	0	0
						1	2	0	0	0
							1	0	0	0
								1	2	2
									1	0
										1

										1
									2		1
								2		0		1
							4		2		2		1
						2		0		0		0		1
					4		2		0		0		2		1
				4		0		2		0		2		0		1
			8		4		4		2		4		2		2		1
		2		0		0		0		0		0		0		0		1
	4		2		0		0		0		0		0		0		2		1
4		0		2		0		0		0		0		0		2		0		1

1	2	2	4	2	4	4	8	2	4	4
1	0	2	0	2	0	4	0	2	0
1	2	0	0	2	4	0	0	2
1	0	0	0	2	0	0	0
1	2	2	4	0	0	0
1	0	2	0	0	0
1	2	0	0	0
1	0	0	0
1	2	2
1	0
1

1	2	2	4	2	4	4	8	2	4	4
	1	0	2	0	2	0	4	0	2	0
		1	2	0	0	2	4	0	0	2
			1	0	0	0	2	0	0	0
				1	2	2	4	0	0	0
					1	0	2	0	0	0
						1	2	0	0	0
							1	0	0	0
								1	2	2
									1	0
										1