A065420 - OEIS

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

A065420 as a triangular array

										2
									6		6
								12		30		12
							20		90		90		20
						30		210		380		210		30
					42		420		1190		1190		420		42
				56		756		3080		4830		3080		756		56
			72		1260		6972		15750		15750		6972		1260		72
		90		1980		14280		43890		63252		43890		14280		1980		90
	110		2970		27060		108570		212982

A065420 as a square array

2	6	12	20	30	42	56	72	90	110
6	30	90	210	420	756	1260	1980	2970
12	90	380	1190	3080	6972	14280	27060
20	210	1190	4830	15750	43890	108570
30	420	3080	15750	63252	212982
42	756	6972	43890
56	1260	14280
72	1980
90

A065420 as an upper right triangle

2	6	12	20	30	42	56	72	90	110
	6	30	90	210	420	756	1260	1980	2970
		12	90	380	1190	3080	6972	14280	27060
			20	210	1190	4830	15750	43890	108570
				30	420	3080	15750	63252	212982
					42	756	6972	43890
						56	1260	14280
							72	1980
								90