A084867 - OEIS

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A084867 as a triangular array

1

1 1

2 2 2

6 4 4 6

20 10 8 10 20

68 30 18 18 30 68

232 98 48 36 48 98 232

792 330 146 84 84 146 330 792

2704 1122 476 230 168 230 476 1122 2704

9232 3826 1598 706 398 398 706 1598 3826 9232

31520 13058 5424

A084867 as a square array

`1`	`1`	`2`	`6`	`20`	`68`	`232`	`792`	`2704`	`9232`	`31520`
`1`	`2`	`4`	`10`	`30`	`98`	`330`	`1122`	`3826`	`13058`
`2`	`4`	`8`	`18`	`48`	`146`	`476`	`1598`	`5424`
`6`	`10`	`18`	`36`	`84`	`230`	`706`
`20`	`30`	`48`	`84`	`168`	`398`
`68`	`98`	`146`	`230`	`398`
`232`	`330`	`476`	`706`
`792`	`1122`	`1598`
`2704`	`3826`
`9232`

A084867 as an upper right triangle

`1`	`1`	`2`	`6`	`20`	`68`	`232`	`792`	`2704`	`9232`	`31520`
	`1`	`2`	`4`	`10`	`30`	`98`	`330`	`1122`	`3826`	`13058`
		`2`	`4`	`8`	`18`	`48`	`146`	`476`	`1598`	`5424`
			`6`	`10`	`18`	`36`	`84`	`230`	`706`
				`20`	`30`	`48`	`84`	`168`	`398`
					`68`	`98`	`146`	`230`	`398`
						`232`	`330`	`476`	`706`
							`792`	`1122`	`1598`
								`2704`	`3826`
									`9232`

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Last modified July 3 16:42 EDT 2024. Contains 373982 sequences. (Running on oeis4.)