A309131 - OEIS

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A309131 as a triangular array

										2
									4		3
								6		6		5
							8		9		10		7
						10		12		15		14		11
					12		15		20		21		22		13
				14		18		25		28		33		26		17
			16		21		30		35		44		39		34		19
		18		24		35		42		55		52		51		38		23
	20		27		40		49		66		65		68		57		46		29
22		30		45		56		77		78		85		76		69		58		31

A309131 as a square array

2	4	6	8	10	12	14	16	18	20	22
3	6	9	12	15	18	21	24	27	30
5	10	15	20	25	30	35	40	45
7	14	21	28	35	42	49	56
11	22	33	44	55	66	77
13	26	39	52	65	78
17	34	51	68	85
19	38	57	76
23	46	69
29	58
31

A309131 as an upper right triangle

2	4	6	8	10	12	14	16	18	20	22
	3	6	9	12	15	18	21	24	27	30
		5	10	15	20	25	30	35	40	45
			7	14	21	28	35	42	49	56
				11	22	33	44	55	66	77
					13	26	39	52	65	78
						17	34	51	68	85
							19	38	57	76
								23	46	69
									29	58
										31

										2
									4		3
								6		6		5
							8		9		10		7
						10		12		15		14		11
					12		15		20		21		22		13
				14		18		25		28		33		26		17
			16		21		30		35		44		39		34		19
		18		24		35		42		55		52		51		38		23
	20		27		40		49		66		65		68		57		46		29
22		30		45		56		77		78		85		76		69		58		31

2	4	6	8	10	12	14	16	18	20	22
3	6	9	12	15	18	21	24	27	30
5	10	15	20	25	30	35	40	45
7	14	21	28	35	42	49	56
11	22	33	44	55	66	77
13	26	39	52	65	78
17	34	51	68	85
19	38	57	76
23	46	69
29	58
31

2	4	6	8	10	12	14	16	18	20	22
	3	6	9	12	15	18	21	24	27	30
		5	10	15	20	25	30	35	40	45
			7	14	21	28	35	42	49	56
				11	22	33	44	55	66	77
					13	26	39	52	65	78
						17	34	51	68	85
							19	38	57	76
								23	46	69
									29	58
										31

										2
									4		3
								6		6		5
							8		9		10		7
						10		12		15		14		11
					12		15		20		21		22		13
				14		18		25		28		33		26		17
			16		21		30		35		44		39		34		19
		18		24		35		42		55		52		51		38		23
	20		27		40		49		66		65		68		57		46		29
22		30		45		56		77		78		85		76		69		58		31

2	4	6	8	10	12	14	16	18	20	22
3	6	9	12	15	18	21	24	27	30
5	10	15	20	25	30	35	40	45
7	14	21	28	35	42	49	56
11	22	33	44	55	66	77
13	26	39	52	65	78
17	34	51	68	85
19	38	57	76
23	46	69
29	58
31

2	4	6	8	10	12	14	16	18	20	22
	3	6	9	12	15	18	21	24	27	30
		5	10	15	20	25	30	35	40	45
			7	14	21	28	35	42	49	56
				11	22	33	44	55	66	77
					13	26	39	52	65	78
						17	34	51	68	85
							19	38	57	76
								23	46	69
									29	58
										31

										2
									4		3
								6		6		5
							8		9		10		7
						10		12		15		14		11
					12		15		20		21		22		13
				14		18		25		28		33		26		17
			16		21		30		35		44		39		34		19
		18		24		35		42		55		52		51		38		23
	20		27		40		49		66		65		68		57		46		29
22		30		45		56		77		78		85		76		69		58		31

2	4	6	8	10	12	14	16	18	20	22
3	6	9	12	15	18	21	24	27	30
5	10	15	20	25	30	35	40	45
7	14	21	28	35	42	49	56
11	22	33	44	55	66	77
13	26	39	52	65	78
17	34	51	68	85
19	38	57	76
23	46	69
29	58
31

2	4	6	8	10	12	14	16	18	20	22
	3	6	9	12	15	18	21	24	27	30
		5	10	15	20	25	30	35	40	45
			7	14	21	28	35	42	49	56
				11	22	33	44	55	66	77
					13	26	39	52	65	78
						17	34	51	68	85
							19	38	57	76
								23	46	69
									29	58
										31