A168313 - OEIS

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A168313 as a triangular array

											1
										0		1
									0		2		1
								0		0		2		1
							0		0		2		2		1
						0		0		0		2		2		1
					0		0		0		2		2		2		1
				0		0		0		0		2		2		2		1
			0		0		0		0		2		2		2		2		1
		0		0		0		0		0		2		2		2		2		1
	0		0		0		0		0		2		2		2		2		2		1

A168313 as a square array

1	0	0	0	0	0	0	0	0	0	0
1	2	0	0	0	0	0	0	0	0
1	2	2	0	0	0	0	0	0
1	2	2	2	0	0	0	0
1	2	2	2	2	0	0
1	2	2	2	2	2
1	2	2	2	2
1	2	2	2
1	2	2
1	2
1

A168313 as an upper right triangle

1	0	0	0	0	0	0	0	0	0	0
	1	2	0	0	0	0	0	0	0	0
		1	2	2	0	0	0	0	0	0
			1	2	2	2	0	0	0	0
				1	2	2	2	2	0	0
					1	2	2	2	2	2
						1	2	2	2	2
							1	2	2	2
								1	2	2
									1	2
										1