A099557 - OEIS

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A099557 as a triangular array

1

1 1

1 2 0

1 3 1 0

1 4 3 1 0

1 5 6 4 0 0

1 6 10 10 1 0 0

1 7 15 20 5 1 0 0

1 8 21 35 15 6 0 0 0

1 9 28 56 35 21 1 0 0 0

1 10 36 84 70 56 7 1 0 0 0

1 11 45 120 126 126 28 8 0 0 0 0

A099557 as a square array

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`	`11`
`0`	`1`	`3`	`6`	`10`	`15`	`21`	`28`	`36`	`45`
`0`	`1`	`4`	`10`	`20`	`35`	`56`	`84`	`120`
`0`	`0`	`1`	`5`	`15`	`35`	`70`	`126`
`0`	`0`	`1`	`6`	`21`	`56`	`126`
`0`	`0`	`0`	`1`	`7`	`28`
`0`	`0`	`0`	`1`	`8`
`0`	`0`	`0`	`0`
`0`	`0`	`0`
`0`	`0`
`0`

A099557 as an upper right triangle

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
	`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`	`11`
		`0`	`1`	`3`	`6`	`10`	`15`	`21`	`28`	`36`	`45`
			`0`	`1`	`4`	`10`	`20`	`35`	`56`	`84`	`120`
				`0`	`0`	`1`	`5`	`15`	`35`	`70`	`126`
					`0`	`0`	`1`	`6`	`21`	`56`	`126`
						`0`	`0`	`0`	`1`	`7`	`28`
							`0`	`0`	`0`	`1`	`8`
								`0`	`0`	`0`	`0`
									`0`	`0`	`0`
										`0`	`0`
											`0`

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Last modified April 23 16:40 EDT 2024. Contains 371916 sequences. (Running on oeis4.)