A020921 - OEIS

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A020921 as a triangular array

											1
										1		1
									0		1		1
								0		2		3		1
							0		2		5		4		1
						0		4		10		10		5		1
					0		2		11		19		15		6		1
				0		6		21		35		35		21		7		1
			0		4		22		52		69		56		28		8		1
		0		6		33		83		126		126		84		36		9		1
	0		4		34		110		205		251		210		120		45		10		1
0		10		55		165		330		462		462		330		165		55		11

A020921 as a square array

1	1	0	0	0	0	0	0	0	0	0	0
1	1	2	2	4	2	6	4	6	4	10
1	3	5	10	11	21	22	33	34	55
1	4	10	19	35	52	83	110	165
1	5	15	35	69	126	205	330
1	6	21	56	126	251	462
1	7	28	84	210	462
1	8	36	120	330
1	9	45	165
1	10	55
1	11

A020921 as an upper right triangle

1	1	0	0	0	0	0	0	0	0	0	0
	1	1	2	2	4	2	6	4	6	4	10
		1	3	5	10	11	21	22	33	34	55
			1	4	10	19	35	52	83	110	165
				1	5	15	35	69	126	205	330
					1	6	21	56	126	251	462
						1	7	28	84	210	462
							1	8	36	120	330
								1	9	45	165
									1	10	55
										1	11

											1
										1		1
									0		1		1
								0		2		3		1
							0		2		5		4		1
						0		4		10		10		5		1
					0		2		11		19		15		6		1
				0		6		21		35		35		21		7		1
			0		4		22		52		69		56		28		8		1
		0		6		33		83		126		126		84		36		9		1
	0		4		34		110		205		251		210		120		45		10		1
0		10		55		165		330		462		462		330		165		55		11

1	1	0	0	0	0	0	0	0	0	0	0
1	1	2	2	4	2	6	4	6	4	10
1	3	5	10	11	21	22	33	34	55
1	4	10	19	35	52	83	110	165
1	5	15	35	69	126	205	330
1	6	21	56	126	251	462
1	7	28	84	210	462
1	8	36	120	330
1	9	45	165
1	10	55
1	11

1	1	0	0	0	0	0	0	0	0	0	0
	1	1	2	2	4	2	6	4	6	4	10
		1	3	5	10	11	21	22	33	34	55
			1	4	10	19	35	52	83	110	165
				1	5	15	35	69	126	205	330
					1	6	21	56	126	251	462
						1	7	28	84	210	462
							1	8	36	120	330
								1	9	45	165
									1	10	55
										1	11

											1
										1		1
									0		1		1
								0		2		3		1
							0		2		5		4		1
						0		4		10		10		5		1
					0		2		11		19		15		6		1
				0		6		21		35		35		21		7		1
			0		4		22		52		69		56		28		8		1
		0		6		33		83		126		126		84		36		9		1
	0		4		34		110		205		251		210		120		45		10		1
0		10		55		165		330		462		462		330		165		55		11

1	1	0	0	0	0	0	0	0	0	0	0
1	1	2	2	4	2	6	4	6	4	10
1	3	5	10	11	21	22	33	34	55
1	4	10	19	35	52	83	110	165
1	5	15	35	69	126	205	330
1	6	21	56	126	251	462
1	7	28	84	210	462
1	8	36	120	330
1	9	45	165
1	10	55
1	11

1	1	0	0	0	0	0	0	0	0	0	0
	1	1	2	2	4	2	6	4	6	4	10
		1	3	5	10	11	21	22	33	34	55
			1	4	10	19	35	52	83	110	165
				1	5	15	35	69	126	205	330
					1	6	21	56	126	251	462
						1	7	28	84	210	462
							1	8	36	120	330
								1	9	45	165
									1	10	55
										1	11

											1
										1		1
									0		1		1
								0		2		3		1
							0		2		5		4		1
						0		4		10		10		5		1
					0		2		11		19		15		6		1
				0		6		21		35		35		21		7		1
			0		4		22		52		69		56		28		8		1
		0		6		33		83		126		126		84		36		9		1
	0		4		34		110		205		251		210		120		45		10		1
0		10		55		165		330		462		462		330		165		55		11

1	1	0	0	0	0	0	0	0	0	0	0
1	1	2	2	4	2	6	4	6	4	10
1	3	5	10	11	21	22	33	34	55
1	4	10	19	35	52	83	110	165
1	5	15	35	69	126	205	330
1	6	21	56	126	251	462
1	7	28	84	210	462
1	8	36	120	330
1	9	45	165
1	10	55
1	11

1	1	0	0	0	0	0	0	0	0	0	0
	1	1	2	2	4	2	6	4	6	4	10
		1	3	5	10	11	21	22	33	34	55
			1	4	10	19	35	52	83	110	165
				1	5	15	35	69	126	205	330
					1	6	21	56	126	251	462
						1	7	28	84	210	462
							1	8	36	120	330
								1	9	45	165
									1	10	55
										1	11