A063841 - OEIS

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A063841 as a triangular array

1

1 1

1 2 1

1 3 4 1

1 4 10 11 1

1 5 20 66 34 1

1 6 35 276 792 156 1

1 7 56 900 10688 25506 1044 1

1 8 84 2451 90005 1601952 2302938 12346 1

1 9 120 5831 533358 43571400 892341888 591901884 274668 1

A063841 as a square array

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`
`1`	`4`	`10`	`20`	`35`	`56`	`84`	`120`
`1`	`11`	`66`	`276`	`900`	`2451`	`5831`
`1`	`34`	`792`	`10688`	`90005`	`533358`
`1`	`156`	`25506`	`1601952`	`43571400`
`1`	`1044`	`2302938`	`892341888`
`1`	`12346`	`591901884`
`1`	`274668`
`1`

A063841 as an upper right triangle

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
	`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`
		`1`	`4`	`10`	`20`	`35`	`56`	`84`	`120`
			`1`	`11`	`66`	`276`	`900`	`2451`	`5831`
				`1`	`34`	`792`	`10688`	`90005`	`533358`
					`1`	`156`	`25506`	`1601952`	`43571400`
						`1`	`1044`	`2302938`	`892341888`
							`1`	`12346`	`591901884`
								`1`	`274668`
									`1`

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Last modified June 6 04:28 EDT 2024. Contains 373115 sequences. (Running on oeis4.)