A220670 - OEIS

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A220670 as a triangular array

3

3 -1

3 -3 1

3 -6 5 -1

3 -10 15 -7 1

3 -15 35 -28 9 -1

3 -21 70 -84 45 -11 1

3 -28 126 -210 165 -66 13 -1

3 -36 210 -462 495 -286 91 -15 1

3 -45 330 -924 1287 -1001 455 -120 17 -1

3 -55 495 -1716 3003 -3003 1820 -680 153 -19 1

A220670 as a square array

`3`	`3`	`3`	`3`	`3`	`3`	`3`	`3`	`3`	`3`	`3`
`-1`	`-3`	`-6`	`-10`	`-15`	`-21`	`-28`	`-36`	`-45`	`-55`
`1`	`5`	`15`	`35`	`70`	`126`	`210`	`330`	`495`
`-1`	`-7`	`-28`	`-84`	`-210`	`-462`	`-924`	`-1716`
`1`	`9`	`45`	`165`	`495`	`1287`	`3003`
`-1`	`-11`	`-66`	`-286`	`-1001`	`-3003`
`1`	`13`	`91`	`455`	`1820`
`-1`	`-15`	`-120`	`-680`
`1`	`17`	`153`
`-1`	`-19`
`1`

A220670 as an upper right triangle

`3`	`3`	`3`	`3`	`3`	`3`	`3`	`3`	`3`	`3`	`3`
	`-1`	`-3`	`-6`	`-10`	`-15`	`-21`	`-28`	`-36`	`-45`	`-55`
		`1`	`5`	`15`	`35`	`70`	`126`	`210`	`330`	`495`
			`-1`	`-7`	`-28`	`-84`	`-210`	`-462`	`-924`	`-1716`
				`1`	`9`	`45`	`165`	`495`	`1287`	`3003`
					`-1`	`-11`	`-66`	`-286`	`-1001`	`-3003`
						`1`	`13`	`91`	`455`	`1820`
							`-1`	`-15`	`-120`	`-680`
								`1`	`17`	`153`
									`-1`	`-19`
										`1`

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Last modified June 6 00:30 EDT 2024. Contains 373110 sequences. (Running on oeis4.)