A281726 - OEIS

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A281726 as a triangular array

													1
												2		2
											3		2		3
										4		2		2		4
									5		2		3		2		5
								6		2		2		2		2		6
							7		2		3		4		3		2		7
						8		2		2		2		2		2		2		8
					9		2		3		2		5		2		3		2		9
				10		2		2		4		2		2		4		2		2		10
			11		2		3		2		3		6		3		2		3		2		11
		12		2		2		2		2		2		2		2		2		2		2		12
	13		2		3		4		5		2		7		2		5		4		3		2		13

A281726 as a square array

1	2	3	4	5	6	7	8	9	10	11	12	13
2	2	2	2	2	2	2	2	2	2	2	2
3	2	3	2	3	2	3	2	3	2	3
4	2	2	4	2	2	4	2	2	4
5	2	3	2	5	2	3	2	5
6	2	2	2	2	6	2	2
7	2	3	4	3	2	7
8	2	2	2	2	2
9	2	3	2	5
10	2	2	4
11	2	3
12	2
13

A281726 as an upper right triangle

1	2	3	4	5	6	7	8	9	10	11	12	13
	2	2	2	2	2	2	2	2	2	2	2	2
		3	2	3	2	3	2	3	2	3	2	3
			4	2	2	4	2	2	4	2	2	4
				5	2	3	2	5	2	3	2	5
					6	2	2	2	2	6	2	2
						7	2	3	4	3	2	7
							8	2	2	2	2	2
								9	2	3	2	5
									10	2	2	4
										11	2	3
											12	2
												13