A218218 - OEIS

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A218218 as a triangular array

														1
													0		0
												0		1		0
											0		1		0		0
										0		1		0		0		0
									0		1		1		0		0		0
								0		1		1		0		0		0		0
							0		1		2		0		0		0		0		0
						0		1		2		0		0		0		0		0		0
					0		1		3		1		0		0		0		0		0		0
				0		1		3		1		0		0		0		0		0		0		0
			0		1		4		2		0		0		0		0		0		0		0		0
		0		1		4		3		0		0		0		0		0		0		0		0		0
	0		1		5		4		0		0		0		0		0		0		0		0		0		0

A218218 as a square array

1	0	0	0	0	0	0	0	0	0	0	0	0	0
0	1	1	1	1	1	1	1	1	1	1	1	1
0	0	0	1	1	2	2	3	3	4	4	5
0	0	0	0	0	0	1	1	2	3	4
0	0	0	0	0	0	0	0	0	0
0	0	0	0	0	0	0	0	0
0	0	0	0	0	0	0	0
0	0	0	0	0	0	0
0	0	0	0	0	0
0	0	0	0	0
0	0	0	0
0	0	0
0	0
0

A218218 as an upper right triangle

1	0	0	0	0	0	0	0	0	0	0	0	0	0
	0	1	1	1	1	1	1	1	1	1	1	1	1
		0	0	0	1	1	2	2	3	3	4	4	5
			0	0	0	0	0	0	1	1	2	3	4
				0	0	0	0	0	0	0	0	0	0
					0	0	0	0	0	0	0	0	0
						0	0	0	0	0	0	0	0
							0	0	0	0	0	0	0
								0	0	0	0	0	0
									0	0	0	0	0
										0	0	0	0
											0	0	0
												0	0
													0