A199408 - OEIS

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A199408 as a triangular array

												1
											2		2
										3		4		3
									4		4		6		4
								5		6		7		8		5
							6		6		6		8		10		6
						7		8		9		10		11		12		7
					8		8		10		8		12		12		14		8
				9		10		9		12		13		12		15		16		9
			10		10		12		12		10		14		16		16		18		10
		11		12		13		14		15		16		17		18		19		20		11
	12		12		12		12		16		12

A199408 as a square array

1	2	3	4	5	6	7	8	9	10	11	12
2	4	4	6	6	8	8	10	10	12	12
3	6	7	6	9	10	9	12	13	12
4	8	8	10	8	12	12	14	12
5	10	11	12	13	10	15	16
6	12	12	12	14	16	12
7	14	15	16	17
8	16	16	18
9	18	19
10	20
11

A199408 as an upper right triangle

1	2	3	4	5	6	7	8	9	10	11	12
	2	4	4	6	6	8	8	10	10	12	12
		3	6	7	6	9	10	9	12	13	12
			4	8	8	10	8	12	12	14	12
				5	10	11	12	13	10	15	16
					6	12	12	12	14	16	12
						7	14	15	16	17
							8	16	16	18
								9	18	19
									10	20
										11