A280500 - OEIS

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A280500 as a triangular array

															1
														0		2
													0		1		3
												0		0		0		4
											0		0		1		2		5
										0		0		0		0		0		6
									0		0		0		1		3		3		7
								0		0		0		0		0		2		0		8
							0		0		0		0		1		0		0		4		9
						0		0		0		0		0		0		0		0		0		10
					0		0		0		0		0		1		0		2		7		5		11
				0		0		0		0		0		0		0		0		0		6		0		12
			0		0		0		0		0		0		1		0		0		0		0		6		13
		0		0		0		0		0		0		0		0		0		2		0		4		0		14
	0		0		0		0		0		0		0		1		3		3		0		3		0		7		15

A280500 as a square array

1	0	0	0	0	0	0	0	0	0	0	0	0	0	0
2	1	0	0	0	0	0	0	0	0	0	0	0	0
3	0	1	0	0	0	0	0	0	0	0	0	0
4	2	0	1	0	0	0	0	0	0	0	0
5	0	3	0	1	0	0	0	0	0	0
6	3	2	0	0	1	0	0	0	0
7	0	0	0	0	0	1	0	0
8	4	0	2	0	0	0	1
9	0	7	0	0	0	3
10	5	6	0	2	3
11	0	0	0	0
12	6	4	3
13	0	0
14	7
15

A280500 as an upper right triangle

1	0	0	0	0	0	0	0	0	0	0	0	0	0	0
	2	1	0	0	0	0	0	0	0	0	0	0	0	0
		3	0	1	0	0	0	0	0	0	0	0	0	0
			4	2	0	1	0	0	0	0	0	0	0	0
				5	0	3	0	1	0	0	0	0	0	0
					6	3	2	0	0	1	0	0	0	0
						7	0	0	0	0	0	1	0	0
							8	4	0	2	0	0	0	1
								9	0	7	0	0	0	3
									10	5	6	0	2	3
										11	0	0	0	0
											12	6	4	3
												13	0	0
													14	7
														15