A331430 - OEIS

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A331430 as a triangular array

-1

-1 2

-1 6 -6

-1 12 -30 20

-1 20 -90 140 -70

-1 30 -210 560 -630 252

-1 42 -420 1680 -3150 2772 -924

-1 56 -756 4200 -11550 16632 -12012 3432

-1 72 -1260 9240 -34650 72072 -84084 51480 -12870

-1 90 -1980 18480 -90090 252252 -420420 411840 -218790 48620

-1 110 -2970 34320 -210210 756756 -1681680 2333760 -1969110 923780 -184756

A331430 as a square array

`-1`	`-1`	`-1`	`-1`	`-1`	`-1`	`-1`	`-1`	`-1`	`-1`	`-1`
`2`	`6`	`12`	`20`	`30`	`42`	`56`	`72`	`90`	`110`
`-6`	`-30`	`-90`	`-210`	`-420`	`-756`	`-1260`	`-1980`	`-2970`
`20`	`140`	`560`	`1680`	`4200`	`9240`	`18480`	`34320`
`-70`	`-630`	`-3150`	`-11550`	`-34650`	`-90090`	`-210210`
`252`	`2772`	`16632`	`72072`	`252252`	`756756`
`-924`	`-12012`	`-84084`	`-420420`	`-1681680`
`3432`	`51480`	`411840`	`2333760`
`-12870`	`-218790`	`-1969110`
`48620`	`923780`
`-184756`

A331430 as an upper right triangle

`-1`	`-1`	`-1`	`-1`	`-1`	`-1`	`-1`	`-1`	`-1`	`-1`	`-1`
	`2`	`6`	`12`	`20`	`30`	`42`	`56`	`72`	`90`	`110`
		`-6`	`-30`	`-90`	`-210`	`-420`	`-756`	`-1260`	`-1980`	`-2970`
			`20`	`140`	`560`	`1680`	`4200`	`9240`	`18480`	`34320`
				`-70`	`-630`	`-3150`	`-11550`	`-34650`	`-90090`	`-210210`
					`252`	`2772`	`16632`	`72072`	`252252`	`756756`
						`-924`	`-12012`	`-84084`	`-420420`	`-1681680`
							`3432`	`51480`	`411840`	`2333760`
								`-12870`	`-218790`	`-1969110`
									`48620`	`923780`
										`-184756`

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Last modified April 25 10:47 EDT 2024. Contains 371967 sequences. (Running on oeis4.)