A207409 - OEIS

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A207409 as a triangular array

														1
													1		2
												1		1		2
											1		2		1		4
										1		1		3		6		2
									1		2		2		3		6		4
								1		1		4		5		8		6		2
							1		2		3		2		1		10		6		4
						1		2		4		1		7		3		12		10		6
					1		1		1		3		9		5		14		12		8		2
				1		1		2		2		4		11		3		18		14		8		6
			1		2		1		6		8		2		7		3		18		12		10		4
		1		1		3		1		10		4		9		5		20		14		12		6		2
	1

A207409 as a square array

1	1	1	1	1	1	1	1	1	1	1	1	1	1
2	1	2	1	2	1	2	2	1	1	2	1
2	1	3	2	4	3	4	1	2	1	3
4	6	3	5	2	1	3	2	6	1
2	6	8	1	7	9	4	8	10
4	6	10	3	5	11	2	4
2	6	12	14	3	7	9
4	10	12	18	3	5
6	8	14	18	20
2	8	12	14
6	10	12
4	6
2

A207409 as an upper right triangle

1	1	1	1	1	1	1	1	1	1	1	1	1	1
	2	1	2	1	2	1	2	2	1	1	2	1
		2	1	3	2	4	3	4	1	2	1	3
			4	6	3	5	2	1	3	2	6	1
				2	6	8	1	7	9	4	8	10
					4	6	10	3	5	11	2	4
						2	6	12	14	3	7	9
							4	10	12	18	3	5
								6	8	14	18	20
									2	8	12	14
										6	10	12
											4	6
												2