A130020 - OEIS

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A130020 as a triangular array

											1
										1		0
									1		1		0
								1		2		2		0
							1		3		5		5		0
						1		4		9		14		14		0
					1		5		14		28		42		42		0
				1		6		20		48		90		132		132		0
			1		7		27		75		165		297		429		429		0
		1		8		35		110		275		572		1001		1430		1430		0
	1		9		44		154		429		1001		2002		3432		4862		4862		0

A130020 as a square array

1	1	1	1	1	1	1	1	1	1	1
0	1	2	3	4	5	6	7	8	9
0	2	5	9	14	20	27	35	44
0	5	14	28	48	75	110	154
0	14	42	90	165	275	429
0	42	132	297	572	1001
0	132	429	1001	2002
0	429	1430	3432
0	1430	4862
0	4862
0

A130020 as an upper right triangle

1	1	1	1	1	1	1	1	1	1	1
	0	1	2	3	4	5	6	7	8	9
		0	2	5	9	14	20	27	35	44
			0	5	14	28	48	75	110	154
				0	14	42	90	165	275	429
					0	42	132	297	572	1001
						0	132	429	1001	2002
							0	429	1430	3432
								0	1430	4862
									0	4862
										0