A166240 - OEIS

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A166240 as a triangular array

													1
												1		1
											1		1		1
										1		2		1		1
									1		2		2		1		1
								1		3		2		2		1		1
							1		3		4		2		2		1		1
						1		4		4		4		2		2		1		1
					1		1		4		6		4		4		2		2		1
				1		1		5		6		7		4		4		2		2		1
			1		1		5		9		7		7		4		4		2		2		1
		1		1		6		9		11		7		7		4		4		2		2		1
	1

A166240 as a square array

1	1	1	1	1	1	1	1	1	1	1	1	1
1	1	2	2	3	3	4	1	1	1	1
1	1	2	2	4	4	4	5	5	6
1	1	2	2	4	6	6	9	9
1	1	2	2	4	7	7	11
1	1	2	4	4	7	7
1	1	2	4	4	7
1	2	2	4	4
1	2	2	4
1	2	2
1	2
1

A166240 as an upper right triangle

1	1	1	1	1	1	1	1	1	1	1	1	1
	1	1	2	2	3	3	4	1	1	1	1
		1	1	2	2	4	4	4	5	5	6
			1	1	2	2	4	6	6	9	9
				1	1	2	2	4	7	7	11
					1	1	2	4	4	7	7
						1	1	2	4	4	7
							1	2	2	4	4
								1	2	2	4
									1	2	2
										1	2
											1