A220415 - OEIS

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A220415 as a triangular array

											2
										2		2
									3		2		3
								4		1		1		4
							5		2		2		2		5
						6		2		1		1		2		6
					7		3		1		2		1		3		7
				8		3		2		1		1		2		3		8
			9		4		2		1		2		1		2		4		9
		10		4		2		1		1		1		1		2		4		10
	11		5		3		2		1		2		1		2		3		5		11

A220415 as a square array

2	2	3	4	5	6	7	8	9	10	11
2	2	1	2	2	3	3	4	4	5
3	1	2	1	1	2	2	2	3
4	2	1	2	1	1	1	2
5	2	1	1	2	1	1
6	3	2	1	1	2
7	3	2	1	1
8	4	2	2
9	4	3
10	5
11

A220415 as an upper right triangle

2	2	3	4	5	6	7	8	9	10	11
	2	2	1	2	2	3	3	4	4	5
		3	1	2	1	1	2	2	2	3
			4	2	1	2	1	1	1	2
				5	2	1	1	2	1	1
					6	3	2	1	1	2
						7	3	2	1	1
							8	4	2	2
								9	4	3
									10	5
										11