A193815 - OEIS

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A193815 as a triangular array

												1
											1		1
										1		3		2
									1		4		6		3
								1		5		10		10		4
							1		6		15		20		15		5
						1		7		21		35		35		21		6
					1		8		28		56		70		56		28		7
				1		9		36		84		126		126		84		36		8
			1		10		45		120		210		252		210		120		45		9
		1		11		55		165		330		462		462		330		165		55		10
	1		12		66		220		495

A193815 as a square array

1	1	1	1	1	1	1	1	1	1	1	1
1	3	4	5	6	7	8	9	10	11	12
2	6	10	15	21	28	36	45	55	66
3	10	20	35	56	84	120	165	220
4	15	35	70	126	210	330	495
5	21	56	126	252	462
6	28	84	210	462
7	36	120	330
8	45	165
9	55
10

A193815 as an upper right triangle

1	1	1	1	1	1	1	1	1	1	1	1
	1	3	4	5	6	7	8	9	10	11	12
		2	6	10	15	21	28	36	45	55	66
			3	10	20	35	56	84	120	165	220
				4	15	35	70	126	210	330	495
					5	21	56	126	252	462
						6	28	84	210	462
							7	36	120	330
								8	45	165
									9	55
										10