A204293 - OEIS

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A204293 as a triangular array

													1
												0		0
											1		0		1
										0		0		0		0
									1		0		2		0		1
								0		0		0		0		0		0
							1		0		3		0		3		0		1
						0		0		0		0		0		0		0		0
					1		0		4		0		6		0		4		0		1
				0		0		0		0		0		0		0		0		0		0
			1		0		5		0		10		0		10		0		5		0		1
		0		0		0		0		0		0		0		0		0		0		0		0
	1		0		6		0		15		0		20

A204293 as a square array

1	0	1	0	1	0	1	0	1	0	1	0	1
0	0	0	0	0	0	0	0	0	0	0	0
1	0	2	0	3	0	4	0	5	0	6
0	0	0	0	0	0	0	0	0	0
1	0	3	0	6	0	10	0	15
0	0	0	0	0	0	0	0
1	0	4	0	10	0	20
0	0	0	0	0
1	0	5	0
0	0	0
1	0
0

A204293 as an upper right triangle

1	0	1	0	1	0	1	0	1	0	1	0	1
	0	0	0	0	0	0	0	0	0	0	0	0
		1	0	2	0	3	0	4	0	5	0	6
			0	0	0	0	0	0	0	0	0	0
				1	0	3	0	6	0	10	0	15
					0	0	0	0	0	0	0	0
						1	0	4	0	10	0	20
							0	0	0	0	0
								1	0	5	0
									0	0	0
										1	0
											0