A143901 - OEIS

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A143901 as a triangular array

												1
											1		1
										2		2		2
									2		3		3		2
								3		4		5		4		3
							3		5		6		6		5		3
						4		6		8		8		8		6		4
					4		7		9		10		10		9		7		4
				5		8		11		12		13		12		11		8		5
			5		9		12		14		15		15		14		12		9		5
		6		10		14		16		18		18		18		16		14		10		6
	6		11		15		18		20		21		21		20		18		15		11		6
7		12		17		20		23		24		25		24

A143901 as a square array

1	1	2	2	3	3	4	4	5	5	6	6	7
1	2	3	4	5	6	7	8	9	10	11	12
2	3	5	6	8	9	11	12	14	15	17
2	4	6	8	10	12	14	16	18	20
3	5	8	10	13	15	18	20	23
3	6	9	12	15	18	21	24
4	7	11	14	18	21	25
4	8	12	16	20	24
5	9	14	18
5	10	15
6	11
6

A143901 as an upper right triangle

1	1	2	2	3	3	4	4	5	5	6	6	7
	1	2	3	4	5	6	7	8	9	10	11	12
		2	3	5	6	8	9	11	12	14	15	17
			2	4	6	8	10	12	14	16	18	20
				3	5	8	10	13	15	18	20	23
					3	6	9	12	15	18	21	24
						4	7	11	14	18	21	25
							4	8	12	16	20	24
								5	9	14	18
									5	10	15
										6	11
											6

												1
											1		1
										2		2		2
									2		3		3		2
								3		4		5		4		3
							3		5		6		6		5		3
						4		6		8		8		8		6		4
					4		7		9		10		10		9		7		4
				5		8		11		12		13		12		11		8		5
			5		9		12		14		15		15		14		12		9		5
		6		10		14		16		18		18		18		16		14		10		6
	6		11		15		18		20		21		21		20		18		15		11		6
7		12		17		20		23		24		25		24

1	1	2	2	3	3	4	4	5	5	6	6	7
1	2	3	4	5	6	7	8	9	10	11	12
2	3	5	6	8	9	11	12	14	15	17
2	4	6	8	10	12	14	16	18	20
3	5	8	10	13	15	18	20	23
3	6	9	12	15	18	21	24
4	7	11	14	18	21	25
4	8	12	16	20	24
5	9	14	18
5	10	15
6	11
6

1	1	2	2	3	3	4	4	5	5	6	6	7
	1	2	3	4	5	6	7	8	9	10	11	12
		2	3	5	6	8	9	11	12	14	15	17
			2	4	6	8	10	12	14	16	18	20
				3	5	8	10	13	15	18	20	23
					3	6	9	12	15	18	21	24
						4	7	11	14	18	21	25
							4	8	12	16	20	24
								5	9	14	18
									5	10	15
										6	11
											6

												1
											1		1
										2		2		2
									2		3		3		2
								3		4		5		4		3
							3		5		6		6		5		3
						4		6		8		8		8		6		4
					4		7		9		10		10		9		7		4
				5		8		11		12		13		12		11		8		5
			5		9		12		14		15		15		14		12		9		5
		6		10		14		16		18		18		18		16		14		10		6
	6		11		15		18		20		21		21		20		18		15		11		6
7		12		17		20		23		24		25		24

1	1	2	2	3	3	4	4	5	5	6	6	7
1	2	3	4	5	6	7	8	9	10	11	12
2	3	5	6	8	9	11	12	14	15	17
2	4	6	8	10	12	14	16	18	20
3	5	8	10	13	15	18	20	23
3	6	9	12	15	18	21	24
4	7	11	14	18	21	25
4	8	12	16	20	24
5	9	14	18
5	10	15
6	11
6

1	1	2	2	3	3	4	4	5	5	6	6	7
	1	2	3	4	5	6	7	8	9	10	11	12
		2	3	5	6	8	9	11	12	14	15	17
			2	4	6	8	10	12	14	16	18	20
				3	5	8	10	13	15	18	20	23
					3	6	9	12	15	18	21	24
						4	7	11	14	18	21	25
							4	8	12	16	20	24
								5	9	14	18
									5	10	15
										6	11
											6

												1
											1		1
										2		2		2
									2		3		3		2
								3		4		5		4		3
							3		5		6		6		5		3
						4		6		8		8		8		6		4
					4		7		9		10		10		9		7		4
				5		8		11		12		13		12		11		8		5
			5		9		12		14		15		15		14		12		9		5
		6		10		14		16		18		18		18		16		14		10		6
	6		11		15		18		20		21		21		20		18		15		11		6
7		12		17		20		23		24		25		24

1	1	2	2	3	3	4	4	5	5	6	6	7
1	2	3	4	5	6	7	8	9	10	11	12
2	3	5	6	8	9	11	12	14	15	17
2	4	6	8	10	12	14	16	18	20
3	5	8	10	13	15	18	20	23
3	6	9	12	15	18	21	24
4	7	11	14	18	21	25
4	8	12	16	20	24
5	9	14	18
5	10	15
6	11
6

1	1	2	2	3	3	4	4	5	5	6	6	7
	1	2	3	4	5	6	7	8	9	10	11	12
		2	3	5	6	8	9	11	12	14	15	17
			2	4	6	8	10	12	14	16	18	20
				3	5	8	10	13	15	18	20	23
					3	6	9	12	15	18	21	24
						4	7	11	14	18	21	25
							4	8	12	16	20	24
								5	9	14	18
									5	10	15
										6	11
											6