A138068 - OEIS

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A138068 as a triangular array

												2
											2		2
										2		7		2
									2		7		7		2
								2		7		1		7		2
							2		7		1		1		7		2
						2		7		1		8		1		7		2
					2		7		1		8		8		1		7		2
				2		7		1		8		2		8		1		7		2
			2		7		1		8		2		2		8		1		7		2
		2		7		1		8		2		8		2		8		1		7		2
	2		7		1		8		2		8		8		2		8		1		7		2

A138068 as a square array

2	2	2	2	2	2	2	2	2	2	2	2
2	7	7	7	7	7	7	7	7	7	7
2	7	1	1	1	1	1	1	1	1
2	7	1	8	8	8	8	8	8
2	7	1	8	2	2	2	2
2	7	1	8	2	8	8
2	7	1	8	2	8
2	7	1	8	2
2	7	1	8
2	7	1
2	7
2

A138068 as an upper right triangle

2	2	2	2	2	2	2	2	2	2	2	2
	2	7	7	7	7	7	7	7	7	7	7
		2	7	1	1	1	1	1	1	1	1
			2	7	1	8	8	8	8	8	8
				2	7	1	8	2	2	2	2
					2	7	1	8	2	8	8
						2	7	1	8	2	8
							2	7	1	8	2
								2	7	1	8
									2	7	1
										2	7
											2