A175353 - OEIS

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A175353 as a triangular array

								2
							6		1
						18		3		1
					54		7		2		1
				162		17		5		2		1
			486		41		11		4		2		1
		1458		99		24		9		4		2		1
	4374		239		53		19		8		4		2		1
13122		577		117		40		17		8		4		2		1

A175353 as a square array

2	6	18	54	162	486	1458	4374	13122
1	3	7	17	41	99	239	577
1	2	5	11	24	53	117
1	2	4	9	19	40
1	2	4	8	17
1	2	4	8
1	2	4
1	2
1

A175353 as an upper right triangle

2	6	18	54	162	486	1458	4374	13122
	1	3	7	17	41	99	239	577
		1	2	5	11	24	53	117
			1	2	4	9	19	40
				1	2	4	8	17
					1	2	4	8
						1	2	4
							1	2
								1