A135227 - OEIS

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A135227 as a triangular array

1

2 1

3 2 1

4 3 3 1

5 4 6 4 1

6 5 10 10 5 1

7 6 15 20 15 6 1

8 7 21 35 35 21 7 1

9 8 28 56 70 56 28 8 1

10 9 36 84 126 126 84 36 9 1

11 10 45 120 210 252 210 120 45 10 1

12 11 55 165 330 462 462 330 165 55 11 1

A135227 as a square array

`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`	`11`	`12`
`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`	`11`
`1`	`3`	`6`	`10`	`15`	`21`	`28`	`36`	`45`	`55`
`1`	`4`	`10`	`20`	`35`	`56`	`84`	`120`	`165`
`1`	`5`	`15`	`35`	`70`	`126`	`210`	`330`
`1`	`6`	`21`	`56`	`126`	`252`	`462`
`1`	`7`	`28`	`84`	`210`	`462`
`1`	`8`	`36`	`120`	`330`
`1`	`9`	`45`	`165`
`1`	`10`	`55`
`1`	`11`
`1`

A135227 as an upper right triangle

`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`	`11`	`12`
	`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`	`11`
		`1`	`3`	`6`	`10`	`15`	`21`	`28`	`36`	`45`	`55`
			`1`	`4`	`10`	`20`	`35`	`56`	`84`	`120`	`165`
				`1`	`5`	`15`	`35`	`70`	`126`	`210`	`330`
					`1`	`6`	`21`	`56`	`126`	`252`	`462`
						`1`	`7`	`28`	`84`	`210`	`462`
							`1`	`8`	`36`	`120`	`330`
								`1`	`9`	`45`	`165`
									`1`	`10`	`55`
										`1`	`11`
											`1`

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Last modified April 20 00:58 EDT 2024. Contains 371798 sequences. (Running on oeis4.)