A130270 - OEIS

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A130270 as a triangular array

									1
								3		1
							6		1		2
						10		1		2		3
					15		1		2		3		4
				21		1		2		3		4		5
			28		1		2		3		4		5		6
		36		1		2		3		4		5		6		7
	45		1		2		3		4		5		6		7		8

A130270 as a square array

1	3	6	10	15	21	28	36	45
1	1	1	1	1	1	1	1
2	2	2	2	2	2	2
3	3	3	3	3	3
4	4	4	4	4
5	5	5	5
6	6	6
7	7
8

A130270 as an upper right triangle

1	3	6	10	15	21	28	36	45
	1	1	1	1	1	1	1	1
		2	2	2	2	2	2	2
			3	3	3	3	3	3
				4	4	4	4	4
					5	5	5	5
						6	6	6
							7	7
								8