A120666 - OEIS

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A120666 as a triangular array

1

1 6

1 20 1680

1 70 34650 63063000

1 252 756756 11732745024 623360743125120

1 924 17153136 2308743493056 1370874167589326400 2670177736637149247308800

1 3432 399072960 472518347558400 3177459078523411968000 85722533226982363751829504000 7363615666157189603982585462030336000

A120666 as a square array

`1`	`1`	`1`	`1`	`1`	`1`	`1`
`6`	`20`	`70`	`252`	`924`	`3432`
`1680`	`34650`	`756756`	`17153136`	`399072960`
`63063000`	`11732745024`	`2308743493056`	`472518347558400`
`623360743125120`	`1370874167589326400`	`3177459078523411968000`
`2670177736637149247308800`	`85722533226982363751829504000`
`7363615666157189603982585462030336000`

A120666 as an upper right triangle

`1`	`1`	`1`	`1`	`1`	`1`	`1`
	`6`	`20`	`70`	`252`	`924`	`3432`
		`1680`	`34650`	`756756`	`17153136`	`399072960`
			`63063000`	`11732745024`	`2308743493056`	`472518347558400`
				`623360743125120`	`1370874167589326400`	`3177459078523411968000`
					`2670177736637149247308800`	`85722533226982363751829504000`
						`7363615666157189603982585462030336000`

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Last modified September 3 23:03 EDT 2024. Contains 375679 sequences. (Running on oeis4.)