A173920 - OEIS

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A173920 as a triangular array

													0
												0		1
											0		1		0
										0		1		1		2
									0		1		0		1		0
								0		1		0		1		1		2
							0		1		1		2		0		1		1
						0		1		1		2		1		2		2		3
					0		1		0		1		0		1		0		1		0
				0		1		0		1		0		1		0		1		1		2
			0		1		0		1		1		2		1		2		0		1		0
		0		1		0		1		1		2		1		2		1		2		1		2
	0		1		1		2		0		1		1		2		0		1		1		2		0
0		1		1		2		0		1		1		2		1		2		2		3		1		2

A173920 as a square array

0	0	0	0	0	0	0	0	0	0	0	0	0	0
1	1	1	1	1	1	1	1	1	1	1	1	1
0	1	0	0	1	1	0	0	0	0	1	1
2	1	1	2	2	1	1	1	1	2	2
0	1	0	1	0	0	1	1	0	0
2	1	2	1	1	2	2	1	1
1	2	0	0	1	1	1	1
3	1	1	2	2	2	2
0	1	0	1	0	1
2	1	2	1	2
0	1	1	2
2	2	3
0	1
2

A173920 as an upper right triangle

0	0	0	0	0	0	0	0	0	0	0	0	0	0
	1	1	1	1	1	1	1	1	1	1	1	1	1
		0	1	0	0	1	1	0	0	0	0	1	1
			2	1	1	2	2	1	1	1	1	2	2
				0	1	0	1	0	0	1	1	0	0
					2	1	2	1	1	2	2	1	1
						1	2	0	0	1	1	1	1
							3	1	1	2	2	2	2
								0	1	0	1	0	1
									2	1	2	1	2
										0	1	1	2
											2	2	3
												0	1
													2

													0
												0		1
											0		1		0
										0		1		1		2
									0		1		0		1		0
								0		1		0		1		1		2
							0		1		1		2		0		1		1
						0		1		1		2		1		2		2		3
					0		1		0		1		0		1		0		1		0
				0		1		0		1		0		1		0		1		1		2
			0		1		0		1		1		2		1		2		0		1		0
		0		1		0		1		1		2		1		2		1		2		1		2
	0		1		1		2		0		1		1		2		0		1		1		2		0
0		1		1		2		0		1		1		2		1		2		2		3		1		2

0	0	0	0	0	0	0	0	0	0	0	0	0	0
1	1	1	1	1	1	1	1	1	1	1	1	1
0	1	0	0	1	1	0	0	0	0	1	1
2	1	1	2	2	1	1	1	1	2	2
0	1	0	1	0	0	1	1	0	0
2	1	2	1	1	2	2	1	1
1	2	0	0	1	1	1	1
3	1	1	2	2	2	2
0	1	0	1	0	1
2	1	2	1	2
0	1	1	2
2	2	3
0	1
2

0	0	0	0	0	0	0	0	0	0	0	0	0	0
	1	1	1	1	1	1	1	1	1	1	1	1	1
		0	1	0	0	1	1	0	0	0	0	1	1
			2	1	1	2	2	1	1	1	1	2	2
				0	1	0	1	0	0	1	1	0	0
					2	1	2	1	1	2	2	1	1
						1	2	0	0	1	1	1	1
							3	1	1	2	2	2	2
								0	1	0	1	0	1
									2	1	2	1	2
										0	1	1	2
											2	2	3
												0	1
													2

													0
												0		1
											0		1		0
										0		1		1		2
									0		1		0		1		0
								0		1		0		1		1		2
							0		1		1		2		0		1		1
						0		1		1		2		1		2		2		3
					0		1		0		1		0		1		0		1		0
				0		1		0		1		0		1		0		1		1		2
			0		1		0		1		1		2		1		2		0		1		0
		0		1		0		1		1		2		1		2		1		2		1		2
	0		1		1		2		0		1		1		2		0		1		1		2		0
0		1		1		2		0		1		1		2		1		2		2		3		1		2

0	0	0	0	0	0	0	0	0	0	0	0	0	0
1	1	1	1	1	1	1	1	1	1	1	1	1
0	1	0	0	1	1	0	0	0	0	1	1
2	1	1	2	2	1	1	1	1	2	2
0	1	0	1	0	0	1	1	0	0
2	1	2	1	1	2	2	1	1
1	2	0	0	1	1	1	1
3	1	1	2	2	2	2
0	1	0	1	0	1
2	1	2	1	2
0	1	1	2
2	2	3
0	1
2

0	0	0	0	0	0	0	0	0	0	0	0	0	0
	1	1	1	1	1	1	1	1	1	1	1	1	1
		0	1	0	0	1	1	0	0	0	0	1	1
			2	1	1	2	2	1	1	1	1	2	2
				0	1	0	1	0	0	1	1	0	0
					2	1	2	1	1	2	2	1	1
						1	2	0	0	1	1	1	1
							3	1	1	2	2	2	2
								0	1	0	1	0	1
									2	1	2	1	2
										0	1	1	2
											2	2	3
												0	1
													2

													0
												0		1
											0		1		0
										0		1		1		2
									0		1		0		1		0
								0		1		0		1		1		2
							0		1		1		2		0		1		1
						0		1		1		2		1		2		2		3
					0		1		0		1		0		1		0		1		0
				0		1		0		1		0		1		0		1		1		2
			0		1		0		1		1		2		1		2		0		1		0
		0		1		0		1		1		2		1		2		1		2		1		2
	0		1		1		2		0		1		1		2		0		1		1		2		0
0		1		1		2		0		1		1		2		1		2		2		3		1		2

0	0	0	0	0	0	0	0	0	0	0	0	0	0
1	1	1	1	1	1	1	1	1	1	1	1	1
0	1	0	0	1	1	0	0	0	0	1	1
2	1	1	2	2	1	1	1	1	2	2
0	1	0	1	0	0	1	1	0	0
2	1	2	1	1	2	2	1	1
1	2	0	0	1	1	1	1
3	1	1	2	2	2	2
0	1	0	1	0	1
2	1	2	1	2
0	1	1	2
2	2	3
0	1
2

0	0	0	0	0	0	0	0	0	0	0	0	0	0
	1	1	1	1	1	1	1	1	1	1	1	1	1
		0	1	0	0	1	1	0	0	0	0	1	1
			2	1	1	2	2	1	1	1	1	2	2
				0	1	0	1	0	0	1	1	0	0
					2	1	2	1	1	2	2	1	1
						1	2	0	0	1	1	1	1
							3	1	1	2	2	2	2
								0	1	0	1	0	1
									2	1	2	1	2
										0	1	1	2
											2	2	3
												0	1
													2