A168577 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A168577 as a triangular array

											3
										6		4
									10		10		5
								15		20		15		6
							21		35		35		21		7
						28		56		70		56		28		8
					36		84		126		126		84		36		9
				45		120		210		252		210		120		45		10
			55		165		330		462		462		330		165		55		11
		66		220		495		792		924		792		495		220		66		12
	78		286		715		1287		1716		1716		1287

A168577 as a square array

3	6	10	15	21	28	36	45	55	66	78
4	10	20	35	56	84	120	165	220	286
5	15	35	70	126	210	330	495	715
6	21	56	126	252	462	792	1287
7	28	84	210	462	924	1716
8	36	120	330	792	1716
9	45	165	495	1287
10	55	220
11	66
12

A168577 as an upper right triangle

3	6	10	15	21	28	36	45	55	66	78
	4	10	20	35	56	84	120	165	220	286
		5	15	35	70	126	210	330	495	715
			6	21	56	126	252	462	792	1287
				7	28	84	210	462	924	1716
					8	36	120	330	792	1716
						9	45	165	495	1287
							10	55	220
								11	66
									12