A128590 - OEIS

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A128590 as a triangular array

												1
											2		2
										4		3		3
									6		6		4		4
								9		8		8		5		5
							12		12		10		10		6		6
						16		15		15		12		12		7		7
					20		20		18		18		14		14		8		8
				25		24		24		21		21		16		16		9		9
			30		30		28		28		24		24		18		18		10		10
		36		35		35		32		32		27		27		20		20		11		11
	42		42		40		40		36		36		30		30		22		22		12		12

A128590 as a square array

1	2	4	6	9	12	16	20	25	30	36	42
2	3	6	8	12	15	20	24	30	35	42
3	4	8	10	15	18	24	28	35	40
4	5	10	12	18	21	28	32	40
5	6	12	14	21	24	32	36
6	7	14	16	24	27	36
7	8	16	18	27	30
8	9	18	20	30
9	10	20	22
10	11	22
11	12
12

A128590 as an upper right triangle

1	2	4	6	9	12	16	20	25	30	36	42
	2	3	6	8	12	15	20	24	30	35	42
		3	4	8	10	15	18	24	28	35	40
			4	5	10	12	18	21	28	32	40
				5	6	12	14	21	24	32	36
					6	7	14	16	24	27	36
						7	8	16	18	27	30
							8	9	18	20	30
								9	10	20	22
									10	11	22
										11	12
											12

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Last modified September 23 01:59 EDT 2024. Contains 376140 sequences. (Running on oeis4.)