A135278 - OEIS

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A135278 as a triangular array

1

2 1

3 3 1

4 6 4 1

5 10 10 5 1

6 15 20 15 6 1

7 21 35 35 21 7 1

8 28 56 70 56 28 8 1

9 36 84 126 126 84 36 9 1

10 45 120 210 252 210 120 45 10 1

11 55 165 330 462 462 330 165 55 11 1

12 66 220 495 792 924 792

A135278 as a square array

`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`	`11`	`12`
`1`	`3`	`6`	`10`	`15`	`21`	`28`	`36`	`45`	`55`	`66`
`1`	`4`	`10`	`20`	`35`	`56`	`84`	`120`	`165`	`220`
`1`	`5`	`15`	`35`	`70`	`126`	`210`	`330`	`495`
`1`	`6`	`21`	`56`	`126`	`252`	`462`	`792`
`1`	`7`	`28`	`84`	`210`	`462`	`924`
`1`	`8`	`36`	`120`	`330`	`792`
`1`	`9`	`45`	`165`
`1`	`10`	`55`
`1`	`11`
`1`

A135278 as an upper right triangle

`1`	`2`	`3`	`4`	`5`	`6`	`7`	`8`	`9`	`10`	`11`	`12`
	`1`	`3`	`6`	`10`	`15`	`21`	`28`	`36`	`45`	`55`	`66`
		`1`	`4`	`10`	`20`	`35`	`56`	`84`	`120`	`165`	`220`
			`1`	`5`	`15`	`35`	`70`	`126`	`210`	`330`	`495`
				`1`	`6`	`21`	`56`	`126`	`252`	`462`	`792`
					`1`	`7`	`28`	`84`	`210`	`462`	`924`
						`1`	`8`	`36`	`120`	`330`	`792`
							`1`	`9`	`45`	`165`
								`1`	`10`	`55`
									`1`	`11`
										`1`

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Last modified April 23 03:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)